Picolinamide
吡啶酰胺, 氮苯酰胺
🗣️ 情景例句
I think yours is a well-known advertising company.
我认为你们公司是一个着名的广告公司。
I'm feeling rather blue.
我觉得有些沮丧。
I know it's not necessary. I want to do it.
我知道不必这样，可是我愿付？/span>