乘虚而入

chéng xū ér rù

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释义

  1. 1. to enter by exploiting a weak spot (idiom); to take advantage of a lapse

乘虚而入 的构成词

乘
chéng

to ride

乘
shèng

(archaic) four horse military chariot

入
rù

to enter

而
ér

and

虚
xū

emptiness

乘虚
chéng xū

to take advantage of weakness