O-
[医] 正, 邻(化学)
🗣️ 情景例句
Is this harmful to kids?
这对孩子有害吗？
I would like to make a long distance call to Taibei.
我想打个长途电话到台北去。
But in an old man who has known human joys and sorrows,
可是老年人已经饱尝了人间的甘苦，