Mpfm
赖特微型峰流量计(mini-Wright peak flow meter)
🗣️ 情景例句
What's wrong, Susan?
怎么啦， Susan？
Nothing down, nothing up.
没有落就没有起。
I know that he's doing his best, but he says that he is a little weak in Chinese.
我知道他非常努力，但他说他的中文有点儿差。