Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
Therefore, Ms. Smith has asked me to tell you that a meeting would not be helpful at this time.
我转告你现在会面没有什么意义。
When you called me, I was eating dinner.
当你打电话给了我时，我正在吃晚饭。
We can offer a 10% discount for orders over 10000 pieces.
订购一万个以上，我们可以打九折。