Deoxygenization
除氧
🗣️ 情景例句
There are a lot of beggars on the street, how can we help them?
街上的乞丐那么多，我们怎么能帮助他们呢？
The wise man is always a good listener.
智者善听人言。
Am I in the same row?
我也在吗？