易字
词典
HSK
废寝忘食
Contains:
废
寝
忘
食
Definitions: 1
HSK: 6
废寝忘食
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廢寢忘食
fèi qǐn wàng shí (fei4 qin3 wang4 shi2)
idiom
(idiom) to skip one's sleep and meals
to be completely wrapped up in one's work