蔣健棠一詞多意lesson2

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energy,能源，還指人的精力。

We should save energy.我們應節(jié)約能源。

Arguing with him was a waste of time and energy.跟他爭論是浪費時間和精力的。

If you want to learn English well, you should spend more time and energy on it.如果想學好英文就得花多點時間和精力上去。