A2
[医] 主动脉第二声
🗣️ 情景例句
He is a college drop-out.
他从大学辍学半途而废。
See, listen, and be silent, and you will live in peace.
多看多听少多嘴，你会太平过日子。
This letter's full of mistakes. I want you to type it again.
这封信里错误百出。我要你重打一遍。