用進廢退

Chinese
to use advance; enter; to come in abolish; crippled
 
retreat; to decline; to move back
retreat; to decline; to move back; to withdraw
trad. (用進廢退) 用 進 廢 退
simp. (用进废退) 用 进 废 退

Pronunciation

Idiom

用進廢退

  1. use and disuse; use it or lose it
    語言學習的根本法則是用進廢退。 [MSC, trad.]
    语言学习的根本法则是用进废退。 [MSC, simp.]
    Yǔyán xuéxí de gēnběn fǎzé shì yòngjìnfèituì. [Pinyin]
    A fundamental rule of language learning is: Use it, or lose it.
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