Backsiphonage
反虹吸
🗣️ 情景例句
How can I forget?
怎么忘得了?
I start work at 8 o'clock.
我八点开始工作。
Recent developments in astronomy have made it possible to detect planets in our won Milky Way and in other galaxies.
天文学方面最新发展使得我们能够在银河系和其他星系发现行星。