Urac
脲-醛类树脂粘合剂
🗣️ 情景例句
What do you do?
你现在做什么工作？
Many happy returns of the day.
祝您长寿。
Just a minute. She's taken the bag that usually sits on top of the cupboard.
等等。她带走了通常放在壁橱顶上的包。