to exert
power
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spare no effort
to spare no effort, spared no effort, do all one can, go all out
他 奋力 爬 上 山顶。
He spared no effort to climb to the mountain top
她 奋力 学习， 考取 了 第 一 名。
She spared no effort studying and tested first place.
奋力 救助 伤员
spare no effort to rescue the wounded