![Spaceisdangerousplace,notonlybecauseofmeteors(流星)butals...]( "Spaceisdangerousplace,notonlybecauseofmeteors(流星)butals...")
- 问题详情：Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherstars.Theatmosphereagainactsasourprotectiveblanketonearth.Lightgetsthrough,andthisisessentialforplantstomakethefoodwhichweeat.Heat,too,makesourenvironmen...
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