Diothyl
嘧啶磷
🗣️ 情景例句
But Dad is always so busy.
但是爸爸总是那么忙。
Here is a price list together with a booklet illustrating our products.
这儿有一份价目单和介绍说明我方产品的小册子。
When you visit London, one of the first things you will see is Big Ben,
当你游览伦敦时，首先看到的东西之一就是“大本”钟，