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But these fortunate usurpers were not by any means absolute rulers ;

这种侥幸的篡夺者决不是绝对的统治者；

In some there are elected or even hereditary kings , in some usurpers or tyrants .

某些城邦拥有选举产生甚至世袭的君主；还有一些城邦则掌握在篡位者或暴君子里。

Most extinctions of species are not caused by usurpers , but by other factors , like climate change , comets , or self inflicted troubles .

大多数物种的灭绝不是因为有篡位者，而是因为其它因素，如气候变化、彗星或其自身造成的麻烦。

The invasive usurpers from south america have proved difficult to fight with insecticides and other traditional measures .

来自南美洲的侵略者被证实杀虫剂和传统方法很难对其起作用。

A lifetime foe of the communist usurpers in eastern europe , he plotted with reformist politicians in budapest to stage a symbolic cross-border austro-hungarian picnic in the summer of 1989 , breaching the iron curtain for ever .

一生仇视东欧的共产主义篡夺者，他在布达佩斯与革命派政治家秘密谋划，于1989年夏上演了具有象征性的范欧野餐计划，彻底粉碎了铁幕。