Thymolysin
溶胸腺素
🗣️ 情景例句
When did you come here?
是什么时候来这儿的？
The only cure for grief is action.
行动是对悲痛唯一的治疗。
There were no classes this afternoon. My classmates all went to People's Park.
今天下午没有课。同学们都到人民公园去了。