Karidium
氟化钠
🗣️ 情景例句
This is Mr. Wu in Room 415.
我在415房间，姓巫。
After breakfast,I'll get ready go to work.
在早餐以后，我将准备好去工作。
At first she decided to go to the police,
一开始拉姆齐太太打算报告警察，