Floram
重氟化铵
🗣️ 情景例句
My name is Wang Feng and I'm calling to cancel plane ticket.
我叫王峰，我想取消我预定的飞机票。
Marian is wearing a dress designed Paris.
玛丽安穿着巴黎设计的时装。
Does the computer ever make a mistake.?
计算机出错吗？