Heterolysin
异种溶素
🗣️ 情景例句
May I ask who I am talking to?
请问你是谁？
Grand Central Station, please. I want to try to catch a 6:00 train.
请到中央火车站。我要赶六点的火车。
With sugar and milk?
要加糖和牛奶吗？