Diphenimide
联苯甲酰环亚胺
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
Kind words are worth much and cost little.
口头方便不费力。
There are some hills in the picture, too.
画上有一些山。