Tuftsin
[化] 他福新; 增免疫苏精肽
🗣️ 情景例句
Susan, I understand you're in the toy business. Susan
听说 ，是在玩具业工作。
Isn't that great?
你不是很好吗？
when the plane suddenly turned round and flew back to the airport.
这时飞机突然调转头来，飞回了机场。