英语长难句请大家帮忙分析翻译

1.the main problem of the car is its prevalence,and the social coasts that ensue from the use by everyone of something that would be fairly harmless if,say,only the rich were to use it.尤其是that后面的那个从句.
2.since,evolution has given rise to few,if any,purposeless physiological responses,it is logical to assume that crying has
one or more fictions that enhance survival.

翻译并且分析,答好有追加!

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