1. She found a nit in her son's hair and immediately started treating it.
她在儿子的头发中发现了一只虱子,立刻开始治疗。
2. The train was pulling a long line of nits.
那列火车正在牵引一长串牵引车。
3. The chemist explained the use of nits in the experiment.
化学家解释了实验中硝基的用途。
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