Ostarthritis
[醫] 骨關節炎
??? 情景例句
Did you ever think of photographing an aerobics class?
你想過拍攝有氧運動課嗎？
I usually read a book to kill time.
我通常用看書來消磨時間。
How do you do ? Are you having a nice time in Beijing?
你好！你在北京玩得愉快嗎？