Eumycin
优霉素(获自枯草杆菌)
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
Oaks may fall when reeds stand the storm.
树大招风。
decided to take some presents to a children's hospital.
盖茨决定送些礼物给儿童医院。