4周搞定2000+托福核心词
restrain = re(回,翻) + strain(拉紧) = 拉紧→克制
constrain = con(共同) + strain(拉紧) = 一起拉紧→限制，约束
ambiguous = ambi(两边，周围) + ig(走) + uous(形容词) = 两边走的→含糊不清的
contiguous = con(共同) + tig(接触) + uous(形容词) = 互相接触的→毗邻的
拉紧的→费力的
strenuous
常考释义
adj. 竭尽全力的；不遗余力的；付出巨大努力的
Alf made strenuous efforts to improve his reading.
阿尔夫为了提高阅读能力付出了巨大的努力。
adj. 费力的；消耗体力的；艰苦的
Avoid strenuous exercise in the evening.
晚上不要做剧烈运动。
These trips were strenuous, and the couple did not enjoy them.
一路舟车劳顿，这对夫妇玩得并不开心。
We live less strenuous lives than our ancestors.
我们的生活不像先辈那样艰苦。
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