hmm
英 [(h)m]
- abbr. 隐马尔可夫模型（Hidden Markov Model）；Hardware Maintenance Manual；Hyundai Merchant Marine
考试真题
- Hmm, I've been a bit worried about his reaction.
2016年6月四级真题（第一套）听力 Section B
- Hmm......our notes say that we arranged for an engineer to visit your house yesterday.
2015年高考英语上海卷 听力 原文