To be at a loss; not knowing what to do; perplexed.
措安置，处理。不知道怎么办才好。形容处境为难或心神慌乱。
《论语·子路》则民无所措手足。”《三国志·吴书·诸葛恪传》哀喜交并，不知所措。”
When the teacher asked a sudden question, he stood there not knowing what to do.
Learn the next connected idiom: 不知所措 (bù zhī suǒ cuò) → 措手不及 (cuò shǒu bù jí)
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