Tfx
[医][=thymic factor x]胸腺因子x
🗣️ 情景例句
Some people are afraid of flying, which limits their options when traveling.
一些人十分害怕坐飞机，这也就限制了他们旅行时的选择了。
I'm afraid you will miss your plane.
我怕你会错过飞机。
' Just then, the telephone rang.
”正在这时，电话铃响了。