一ㄧˊyí物ㄨˋwù降ㄒㄧㄤˊxiáng一ㄧˊyí物ㄨˋwù

yī wù xiáng yī wùㄧ　ㄨˋ ㄒㄧㄤˊ ㄧ　ㄨˋ

指任一事物皆有其他事物可以制伏。例「一物降一物是自然規律」。

英lit. one object bests another object, every item has a weakness (idiom), there is a rock to every scissor, a scissor to every paper, and a paper to every rock