Methanophone
瓦斯警报器
🗣️ 情景例句
Yes, he makes house calls, but the doctor has an opening only after 2:00 p.m.
好，他愿出诊，但他在下午2点后才有空。
It's nothing.
小事情；不足挂齿。
I feel terrible.
我感觉糟透了。