4周搞定2000+托福核心词
oscillation = oscill(摇摆) + ation(表名词) = n. 振荡；振动；摆动
accumulation = ac(一再) + cumul(堆积) + ate(使) + ion(表名词) = 一再使堆积起来→积累
advocate = ad(强化) + voc(叫喊) + ate(使) = 增强声音→拥护
使摇摆
oscillate
常考释义
There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.
但是，气候条件存在波动，造成干湿交替，以致可以获取的动植物数量忽高忽低。
来源于：阅读OFFICIAL21 P2vi. 上下波动；振荡<正式>
The share price has oscillated between a five-year high of 157.25p in 1997 and this year's low of 91.5p.
股票价格在1997年创下的5年内高点157.25便士和今年的低点91.5便士之间波动。
Oil markets oscillated on the day's reports from Geneva.
石油市场因当天来自日内瓦的传言而出现了振荡。
There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.
但是，气候条件存在波动，造成干湿交替，以致可以获取的动植物数量忽高忽低。
来源于：阅读OFFICIAL21 P2vi. 摆动；振动；振荡【技】
I checked to see if the needle indicating volume was oscillating.
我查看音量指针是否在摆动。
Its wings oscillate up and down 100 times a second.
它的翅膀每秒钟上下振动100次。
vi. 摇摆；犹豫<正式>
Do you think we're closer to war or closer to peace?—I oscillate every day.
你认为我们是更接近战争还是更接近和平？——我每天都在这两个答案间摇摆。
He oscillates between conservatism and radicalism.
他在保守方针和激进措施之间摇摆。
His mood oscillated between cooperation and aggression.
他的情绪在合作和敌对之间摇摆。
The president of the Republic oscillated between a certain audacity and a prudent realism.
共和国总统在些许大胆冒进情绪和谨慎的现实主义之间来回摇摆。
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