Stf
[医][=serum thymus factor]血清胸腺因子
🗣️ 情景例句
I don't see any breaks or fractures.
我看不出有任何破裂或骨折。
I'm lost.
我给搞糊涂了。
I must go to the grocer's.We haven't got much tea or coffee, and we haven't got any sugar or jam.
我得去一下食品店。我们的茶叶和咖啡不多了，糖和果酱也没有了。