Cathetus
中直线
🗣️ 情景例句
Sure.
当然。
Do you often play bridge on Saturday?
你常常在星期六玩桥牌吗？
Alcohol may be a medical disinfectant, but should not be relied upon to sterilize water.
酒精可能是医学上的消毒剂，但决不可用来消毒饮用水。