coca 1-20200 english word,Image and sound

Exertion 12702.Exertion 英 ɪɡ'Zɜːʃn]美 ɪɡ'Zɝʃən 释义 N 发挥；运用；努力

正面	12702.exertion 英 [ɪɡ'zɜːʃn]美 [ɪɡ'zɝʃən]
背面	释义： n. 发挥；运用；努力 例句： 1. Age diminishes the heart's ability to pump harder and faster under exertion.随着年龄的增加，人在消耗体力时心脏的输血能力和输血速度会有所减弱。 1、over- "above normal" + time. exertion 尽力，费力来自exert, 行使，竭力。 exertion (n.)1660s, "act of exerting," from exert + -ion. Meaning "vigorous action or effort" is from 1777."

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