Infrasizer
超微粒空气分级器
🗣️ 情景例句
If you educate the public about dangerous diseases they can protect themselves, which will help to halt the spread.
如果你能教育公众如何来防治危险疾病，他们就能够保护好他们自己，从而阻止疾病的传播。
Excuse me I don't know.
对不起我不知道。
Where did you learn to speak English?
你从哪里学会说英语的呢？