Protective colliod
[机] 保护胶体
🧩 词语组成解析
🗣️ 情景例句
You are a very smart young man, Robbie.
你是个绝顶聪明的年轻人， Robbie。
All things are easy that are done willingly.
做事乐意，诸事容易。
What's the weather like today?
今天天气怎么样？