Hn1
[化] 2,2'-二氯三乙胺
🗣️ 情景例句
I'm Richard Stewart, and this is my wife, Marilyn.
我叫Richard Stewart ，这是我妻子 Marilyn。
The board won't approve of the budget for this year's expenditures.
会议上将不会承认本年度的支出预算。
Where can I go for help?
我该怎么办呢？