Sexavalence
[化] 六价
🗣️ 情景例句
When you feel your life is threatened, just dial 999 to get help.
当你的生命受到威胁的时候，拨打 999 求救。
Who is the auther of this mystery story?
谁是这篇神秘故事的作者？
For small pieces of weather -- and to a global forecaster,
对于小片的恶劣天气--对一个全球性的气象预报员来说，