n.努力( exertion的名词复数 )，费力，（能力、权力等的）运用，行使...

exertion的音标：exertion的英式发音音标为：[ɪg'zɜ:ʃn]exertion的美式发音音标为：[ɪg'zɜrʃn]...

After two days' exertions, it's the arms and hands that seize up, not the legs.两天的辛苦劳累过后，发僵的是胳膊和双手，腿倒没事。After two days' exertions, it's the arms and hands that seize up, not the legs...两天的辛苦劳累过后，发僵的是胳...

exert oneself的音标：exert oneself的英式发音音标为：[iɡ'zə:t wʌn'self]exert oneself的美式发音音标为：[ɪɡ'zɚt wʌn'sɛlf]...