L.f.d.
[医] 最低致死量(毒素)
🗣️ 情景例句
Wonderful!
好极了！
The water that bears the boat is the same that swallows it up.
水能载舟，也能覆舟。
Postcards always spoil my holidays.
明信片总搅得我假日不得安宁。