Airbron
[化] 乙酰半胱氨酸
🗣️ 情景例句
We usually accept payment by irrevocable L C payable against shiping documents.
我们一般用不可撤销信用证，凭装运单据结汇付款方式。
Can you do me a favour?
您能帮我个忙吗？
You should give it a try.
你应该试一试。