动词短语
中文翻译：在课堂上
同义词：
['in the classroom', 'in session', 'during class例句：1. Please turn off your phone and focus on the lesson.（请把手机关掉，专心听讲。）']
例句：
-
1. Please turn off your phone and focus on the lesson.
请把手机关掉，专心听讲。
-
2. She was absent from class yesterday because she had a doctor's appointment.
她昨天没来上课，因为她有医生的预约。
-
3. The teacher asked us to raise our hands when we needed to ask questions in class.
老师要求我们在上课时举手提问。