Pneumococcidal
[医] 杀肺炎球菌的
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
Sure.
不用谢，当然了。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？