Fd50
[医] 半数致死量
🗣️ 情景例句
Being with him helped.
和他在一起有帮助。
Don't bury your head in the sand.
不要逃避现实。
Sorry, I don't have one. Ask Lily. I think she has one.
对不起，我没有，问问莉莉，我想她可能有。