Isolysin
同种溶素, 同族溶素
🗣️ 情景例句
about leaving New York, the family, and friends.
对于离开纽约， 家人和朋友。
It's nothing. Don't mention it.
区区小事，何足挂齿。
How are you getting on with your English lessons?
你的英语课学得怎么样了？