英语说明文范文
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英文说明文
OurSickEarthOurmotherEarthissick;shehasfeverandiscoughingpollutedair!Why?Itisbecauseofus ofman-kind.Allowmetoexplainthisinthreeects airpollution waterpollutionandlandpollution.Firstly onairpollution.Becauseofindustrialdevelopments...
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英语说明文
Aneraserisanarticleofstationerythatisusedforremovingpencilmarkings.Erasershavearubberyconsistencyandareoftenpinkorwhite.Somepencilshaveaneraserononeend.Typicalerasersaremadefromsyntheticrubber...