英语说明文范文

英语说明文

Aneraserisanarticleofstationerythatisusedforremovingpencilmarkings.Erasershavearubberyconsistencyandareoftenpinkorwhite.Somepencilshaveaneraserononeend.Typicalerasersaremadefromsyntheticrubber...

发布时间：2025-12-07 浏览量：48
英文说明文

OurSickEarthOurmotherEarthissick;shehasfeverandiscoughingpollutedair!Why?Iti***ecauseofus ofman-kind.Allowmetoexplainthisinthreeects airpollution waterpollutionandlandpollution.Firstly onairpollution...

发布时间：2025-10-15 浏览量：46