Tfx
[医][=thymic factor x]胸腺因子x
🗣️ 情景例句
How much do I owe you?
我应付你多少钱？
You had better not bother him right now.
你现在最好不要去打扰他。
It seems she was in class on Friday afternoon, but no one has seen her since.
好象她星期五还在教室，但从那以后没人看见过她。