Preoxidation
预氧化
🗣️ 情景例句
Public transportation is quite convenient in this city.
在这个城市里，公共交通很方便。
That's just what I was looking for.
那正是我所期待的。
The porter went to fetch one and arrive back with the station master,
搬运工跑回去取时刻表，同时请来了站长。