kaiserin

例句：

1. 1. The emperor's wife is the most important person in the palace.
   皇帝的妻子是宫廷中最重要的人。
2. 2. She was the first woman to become a monarch in her country.
   她是她国家第一位成为君主的女性。
3. 3.The king's regent is responsible for running the country during his absence.
   国王的摄政王在他不在时负责管理国家。