efficient

【TPO例句】

1. There were climate changes, of course, and growing aridity and rising population densities may have forced them to intensify the exploitation of cereals, which in turn might have stimulated the development of sickles and other tools and the permanent communities that make agriculture efficient. (TPO52-P2)

当然，天气变化是一个原因，越来越严重的干旱以及人口密度的增长可能迫使他们加强对谷物的开发利用，这转而可能会促进镰刀、其他工具以及使农业变得高效化的永久群落的发展。

2. It’s actually more efficient for a bear to only eat some parts of the fish and then try catching another one, instead of eating the whole fish. (TPO52-L2)

实际上对于一头熊来说，只吃鱼的一部分，接着去抓新的鱼是比吃一整条鱼更有效率的事情。

3. Now, I'm guessing it wasn't too expensive or time-consuming for Levitt to come up with this idea, but it was certainly efficient and hugely popular with families. (TPO36-L3)

我猜这并没有花费Levitt很多金钱和时间来想出这个方案，但是这个主意在家庭之间是很高效且非常流行的。

4. Unfortunately, this is slow, expensive, and just not very efficient.(TPO39-L4)

不幸的是，这个过程很慢，很贵，而且效率不高。

5. It'd be more efficient and therefore cheaper to combine the two steps I mentioned into one. (TPO39-L4)

把这两个步骤合二为一可以更高效，更经济。

6. At the same time, people were moving to the city, partly because of the enclosure movement; that is, the fencing of common fields and pastures in order to provide more compact, efficient privately held agricultural parcels that would produce more goods and greater profits.(TPO49-P3)

同时，人们搬到城市，这在一定程度上是因为圈地运动造成的；（圈地运动）所指的就是，将公共耕地和牧场圈起，以提供更紧凑、更高效率的私人持有的农业土地，这将有利于生产更多的商品，并创造更大的利润。

7. At a much larger scale, baleen whales and whale sharks are also efficient filter-feeders in productive coastal or polar waters, although their filtered particles comprise small animals such as copepods and krill rather than phytoplankton.(TPO45-P3)

规模更大的须鲸和鲸鲨也是沿海或极地水域的高效滤食动物，虽然它们的滤食对象不仅限于浮游植物，还有桡足类、磷虾等小动物。

8. Therefore, fires had to be small, and cooking methods had to be efficient. (TPO45-L4)

因此，火必须较小，烹饪方法必须有效。

9. You could make a lot of buildings more efficient with all that money and that would reduce the need for electricity. (TPO44-L4)

当你用笔钱提高建筑物的能效后，能减少人们的用电需求。 

10. So what are the most efficient bacteria in the process? (TPO34-L2)

因此，在这个过程中什么细菌才是最有效的呢？

11. It was an artificial ecosystem of animals, woodlots, and crops, whose large, uniform layout made western farms more efficient than the more-irregular farms in the East.(TPO33-P2)

这是一种人造的动物、树木和作物的生态系统，其广大的独一无二的布局使得西部农场比无秩序的东部农场更加有效率。

12. Pioneer species - those that occur only in the earliest stages of colonization - tend to have high rates of invasion because they produce very large numbers of reproductive propagules (seeds, spores, and so on) and because they have an efficient means of dispersal (normally, wind).(TPO32-P1)

先驱物种——只出现在殖民的最初阶段——它们能高效的入侵，因为它们可以产生大量的生殖繁殖体 (像是种子，孢子之类) 并且它们有一种高效的传播方式 (正常情况下，是风) 。

13. If colonizers produce short-lived reproductive propagules, they must produce very large numbers unless they have an efficient means of dispersal to suitable new habitats. (TPO32-P1)

如果殖民植物产出的是寿命较短的生命繁殖体，之后它们就必须繁殖很大的数量，除非它们有一种高效的传播方式去适应新的栖息地。

14. But I think if she had designed this house today, the same biographers would praise her for coming up with a floor plan that emphasized function, efficient function of a house, as well as a design that’s creative and unique. (TPO32-L4)

但是，我相信，如果她是在今天设计的这个房子，同一批传记作者可能会对她注重功能性，房屋的有效功能性的建筑平面图，以及她创新独特的设计赞誉有加。

15. In 1832, the year of Michael Faraday’s discovery that a changing magnetic field produces an electric field, a young French engineer patented a new and more efficient waterwheel. (TPO29-P3)

在1832年，当Michael Faraday发现了变化的磁场能够产生电场理论时，一位年轻的法国工程师申请了一种新型的更有效率的水轮专利。

16. Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery. (TPO26-P1)

大不列颠有大量的煤矿；然而，还没有产生机械能或为机器提供动力的有效方法。

17. In the late 1700s James Watt designed an efficient and commercially viable steam engine that was soon applied to a variety of industrial uses as it became cheaper to use. (TPO26-P1)

在18世纪末期，詹姆斯•瓦特设计了一款高效且具商业利益的蒸汽机，由于其价格低廉，很快就被运用到各项工业生产之中。

18. Other innovations of the late fourth millennium include the wheel, probably developed first as a more efficient way of making pottery and then transferred to transport. (TPO26-P3)

4000年前的晚期的发明还包括轮子，这一发明最初可能是用于提高陶器的生产效率的，而后被应用到交通运输上。

19. The Martian atmosphere is an efficient erosive agent, with Martian winds transporting dust from place to place and erasing surface features much faster than meteoritic impacts alone can obliterate them.(TPO25-P1)

火星大气是一种强效的腐蚀剂，加之火星上的风把灰尘从一个地方卷到另一个地方，较之仅仅是因流星冲击而形成的尘埃的作用，（火星上的）地表特征被消除得更快。

20. This friction tends to slow the speed of winds, making them far less efficient at dispersing pollutants. (TPO23-P1)

这种摩擦会降低风速，使得气体扩散污染物的效率降低。

21. At present, we can make efficient use of only naturally occurring hot water or steam deposits. (TPO21-P1)

目前，我们只能有效地利用天然形成的热水或蒸汽形式的地热能。

22. As the different families of venomous snakes evolved, the teeth moved forward, becoming larger, and the venom becoming stronger, so the evolution of the obvious venomous snakes, like cobras and vipers, is about the evolution of an efficient delivery system, not so much the evolution of the venom itself. (TPO21-L3)

至于各类别毒蛇的进化, 它们的牙齿更加向前, 变得更大, 毒液也变得越加剧烈, 所以说这些明显是毒蛇的蛇种, 像眼镜蛇和蝰蛇, 都是捕捉有效性的进化, 而非毒液的进化。

23. And this maxim of relevance is quite efficient to use.(TPO20-L1)

格莱斯定律的相关原则其实非常好用。

24. Having an efficient means of transportation, well, that helps the Iroquois to form a federation linked by natural waterways. (TPO7-L3)

有了如此便利的交通运输工具，这就使得他们可以通过自然航道形成联盟，

25. This was an important innovation, because the camel’s abilities to thrive in harsh desert conditions and to carry large loads cheaply made it an effective and efficient means of transportation. (TPO7-P3)

这是一次重要革新，因为骆驼有能力生存在恶劣的沙漠环境，另外，骆驼可以便宜地运输大量的载荷，这使得它们成为了一种方便高效的运输方式。

26. The engine eliminated water in the mines by driving efficient pumps, which made possible deeper and deeper mining.(TPO6-P1)

通过驱动高效率的泵，引擎可将矿井中的水排出，矿井就能挖掘得更深。

27. It drinks a lot of nectar from flowers and feeds on some insects, but it’s energy efficient too. (TPO3-L1)

它们得喝很多花蜜吃昆虫，其实它们也很节能的。

28. It just wasn’t very efficient. (TPO1-L2)

这样的做法其 实效率并不高。