Septaria
septarium 的复数
🗣️ 情景例句
How does she get by on such a small salary?
她靠那么一点薪水怎么过生活？
How much is the salary a month?
每月薪水多少？
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。