Ectotoxin
[化] 外毒素\\n[医] 外毒素
🗣️ 情景例句
We are four in all.
我们家共有四口人。
Who are you writing to?
你正在写信给谁？
George showed me to the guestroom which, he said, was rarely used.
乔治把我领进客房，说这间很少使用。