Fd50
[医] 半数致死量
🗣️ 情景例句
Let me give you more detail.
让我来详细说明。
Wisdom in the mind is better than money in the hand.
脑中有知识，胜过手中有金钱。
Carl, what does quake mean, as in the word earthquake?
卡尔，earthquake这个词中的“quake”是什么意思？