Etec
[医][=enterotoxic escherichia coli]肠毒素大肠杆菌
🗣️ 情景例句
I don't know for sure.
我不太清楚。
How do you spell your last name?
你的姓是怎样拼写的？
I had a letter from my sister yesterday.
昨天我收到了姐姐的一封信，