It was the ultimate crime: the murder of an emperor.

这是一宗终极罪行：谋杀一国之君主。

youdao

I kept for nearly a year the flask-shaped cocoon of an emperor moth.

我有一个天蛾的茧儿，差不多藏了一年。

youdao

The death of the emperor marked the end of an epoch in the country's history.

皇帝驾崩标志着该国历史上一个时代的结束。

《牛津词典》

He sent an announcement to the newspapers of San Francisco saying he was Emperor Norton the First of the United States and the Protector of Mexico.

VOA: special.2009.12.14

The model has been honed using 43 years' worth of observations of an emperor colony in Antarctica's Terre Adelie.

BBC: Emperor penguins face extinction

The penguin's arrival has revived memories of another penguin, an emperor nicknamed Happy Feet, that arrived in 2011 and whose recovery at the zoo captured the hearts of many before he was released.

NPR: Penguin Found Stranded On New Zealand Beach Dies

One example is Marguerite Yourcenar's "Memoirs of Hadrian, " an imagined life of the Roman emperor Hadrian.

WSJ: Dear Book Lover: Fiction that Reads Like Nonfiction