Lethal concentration (lc)
[化] 致死浓度
🧩 词语组成解析
🗣️ 情景例句
Now would be a good time, I think, for some introductions.
我想，下面是作些介绍的时候了。
What's the area of the Congo in square miles?
在平方英里内刚果的范围是什么？
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。