L.f.d.
[医] 最低致死量(毒素)
🗣️ 情景例句
Have some iced tea.
喝点冰茶吧。
He surprised them, so they gave up quietly.
他出其不意地袭击了他们，因此他们乖乖地投降了。
I'm tired, said my younger brother as he climbed up to join me.
“我累了，”我弟弟边说边爬上岩石和我汇合。