Cth
[医][=ceramide trihexoside]三己糖酰基鞘氨醇
🗣️ 情景例句
Do you understand?
你明白吗？
Let me introduce myself.
让我自我介绍一下。
Last week, a group of Class 3 students decided to go to the museum in the centre of the town.
上星期，3班的一群学生决定去参观位于城镇中心的博物馆。