Hexides
己糖二酐(脱二水己六醇类)
🗣️ 情景例句
People who take less exercise seem more vulnerable to illness.
缺少运动的人对疾病的抵抗力就差。
The houses downtown are very expensive.
市区的房子很贵。
What time will the next train leave?
下一班火车什么时候开？