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Wing it
wing it /wiŋ/
临阵磨枪;临时准备;即兴表演
It means to prepare for sth. at the last moment.
它指的是事到临头才开始准备。
They don't have enough time to prepare, so they have to wing it.
他们没有足够的时间去准备，所以只能凑合着弄了。
He lost his well-prepared manuscript, so he had to wing it.
他弄丢了之前准备好的稿子，只好即兴地来了。