外戚的英文：
[History] relatives of a ruler or a king or an emperor on his mother's or wife's side
n. 历史学；历史；历史记录；经历；发展史；来历
history of Libya
利比亚历史
History is contingent.
历史是偶然的。
The history of liberty is a history of the limitation of government power.
自由的历史是限制政府权力的历史。
n. [relative] 的复数形式；亲属，关系词
relative extreme
相对极值
Success is a relative term. It brings so many relatives.
成功是一个相关名词，他会给你带来很多不相关的亲戚(联系)。
Einstein fathered relativity.
爱因斯坦创立了相对论。
n. 统治者；尺
Dictators are arbitrary rulers.
独裁者即独断专横的统治者。
He was once a potent ruler.
他曾经是有权势的统治者。
Circumstances are the rulers of the weak, instrument of the wise.
弱者困于环境，智者利用环境。