L.f.d.
[医] 最低致死量(毒素)
🗣️ 情景例句
No, thank you. Please tell him to phone me when he comes back.
不了，谢谢。他回来时，请告诉他给我打个电话。
Do you live across from the bus station?
你在公共汽车站对面居住吗？
You always tell me to drive slowly, darling.
你总是叫我开慢点，亲爱的。