Calcofluor
[美]卡尔科弗卢尔(荧光增白剂)
🗣️ 情景例句
You do. You do. There's a book here.
当然 ，当然。书要出版。
Could you tell me where the nearest telephone is?
你能告诉我最近的电话在哪儿吗？
We must stress that these payment terms are very important to us.
我们必须强调这些付款条件对我们很重要。