请分析下面这个句子的成分,主句是个强调句型,survive后面的我就搞得不清楚了.itisalmostalwayduetosomeveryspecialcircumstancesthattracesoflandanimalssurvive,asbyfallingintoinacceciblecaves,orintoanicec

Question

请分析下面这个句子的成分,主句是个强调句型,survive后面的我就搞得不清楚了.
it is almost alway due to some very special circumstances that traces of land animals survive,as by falling into inaccecible caves,or into an ice crevasse,like the siberian mammoths ,when the whole animal is sometimes preserved,as in a refrigerator.

Answer 1

几乎总是在非常特殊的情况下,陆地动物的痕迹才保留至今,就像西伯利亚的猛犸掉入无法涉足的洞穴或冰缝,有时整个动物就像藏在冰柜里.
as by.crevasse 修饰 survive
like ...mammoths 修饰 falling
when...refrigerator 修饰 mammonths