Spergon
四氯对醌
🗣️ 情景例句
It's been very nice talking to you.
很高兴与你交谈。
We handle export of microwave ovens and would take the liberty to send you our price list for your reference.
我们经营微波炉出口业务，现冒昧给你方寄去我方报价单供参考。
We need to make some changes in this contract.
这份契约有几个地方需要修改。