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托福
托福词汇

circulation

TPO词频:7次
circ圆,环
ula名词
tion表名词
循环,流通

[,sɝkjə'leʃən]


【释义】

基本释义 n. 流通

常考释义 n. 传递;流传;流通

【变形】

复数:circulations    

n. 循环

【TPO例句】

1. However, it lacks any sign of a hydrologic system (water circulation and distribution): there are no streams, lakes oceans or glaciers. (TPO51-P2)

然而,它没有任何水文系统(水循环和分布)的迹象:没有溪流、湖泊、海洋或冰川。

2. Ecosystems thus involve the circulation, transformation, and accumulation of energy and matter through the medium of living things and their activities. (TPO19-P2)

因此生态系统包括通过生物媒介和活动而产生的循环、转换和能量及物质的积累。

n. 传递;流传;流通

【TPO例句】

1. Beginning in the 1160s, the opening of new silver mines in northern Europe led to the minting and circulation of vast quantities of silver coins. (TPO46-P2)

从十二世纪六十年代欧洲北部开辟了新的银矿开始,大量银币开始铸造和流通。

2. The ancestors of these animals already had a circulation system, and they were mobile, so that they could move to water to drink. (TPO44-P1)

这些动物从祖先起就已经有了一个流通系统,它们可以移动,所以可以挪到水边饮水。

3. And then before we decide to include a book in the sale, we review its circulation history again, which can take a while. (TPO34-C1)

然后,在我们决定把一本书放在特卖会之前,我们会再次更新它的流通历史,这可能会花点时间。

4. Extracting heat from very hot, dry rocks presents a more difficult problem: the rocks must be fractured to permit the circulation of water, and the water must be provided artificially. (TPO21-P1)

要从极干热的岩石中提取热量存在一个更大的难题:岩石需要有裂缝才能让水流通,而且水必须是人工提供的。

n. (报刊)发行量,销售量

n. (某段时间的)社交活动,交际