Protective colliod
[机] 保护胶体
🧩 词语组成解析
🗣️ 情景例句
Perfect!
太棒了！
The timid child would not leave his mother's side.
那个胆小的孩子不愿离开母亲。
'May I have two tickets please?' I asked.
“我可以买两张票吗？”