Helicobacter
螺杆菌
🗣️ 情景例句
That isn't necessary.
这倒不必。
I don't know what I should have done without your help.
要不是您的帮助，我真不知道该怎么办。
The last order didn't work out too well for us.
上回订的货用起来不怎么顺。