knock oneself out
英 [nɔk wʌnˈself aut] 美 [nɑk wʌnˈsɛlf aʊt]

释义

把自己弄得精疲力竭，尽最大努力；

权威例句

Of mice and Mendel. The predicted rise in the use of knock-out and transgenic mice should cause us to reflect on our justification f...
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