Spheromycin
新生霉素
🗣️ 情景例句
We're open till nine P.M..
我们开到晚上九点。
We know that you are leading exporters of coal and you can provide the quantity we need.
我们知道贵方是主要煤炭出口商，能满足我们的需求量。
Were you at butcher's, too?
您也在肉店里吗？