hmm

abbr. 隐马尔可夫模型（Hidden Markov Model）；Hardware Maintenance Manual；Hyundai Merchant Marine

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可以联想到在思考时常常会发出“hmm”的声音，想象自己在思考一个问题时，嘴里自然而然发出这个声音。

例句

1. "Hmm, I can't decide which movie to watch tonight."

"嗯，我不知道今晚看哪部电影。"

2. "When she said she was leaving, I just replied, 'Hmm.'"

"当她说要离开时，我只是回答了，‘嗯’。"

3. "Hmm, that sounds like a good idea!"

"嗯，那听起来是个好主意！"