Australia,an isaland continent cast adrift during the time of dinosaurs.

Isolatedfrom the rest of life on land for millions of years,?theanimals cast away here are today like none elsewhere.

如何理解likenone elsewhere意思？這里的like是什么使用方法?

like 為介詞，像...。 none在此=none of the animals. elsewhere為后置定語?，F(xiàn)在澳洲的動物不同于其它地方的動物。