英语说明文
2025-12-07
Aneraserisanarticleofstationerythatisusedforremovingpencilmarkings.Erasershavearubberyconsistencyandareoftenpinkorwhite.Somepencilshaveaneraserononeend.Typicalerasersaremadefromsyntheticrubber...
英文说明文
2025-10-15
OurSickEarthOurmotherEarthissick;shehasfeverandiscoughingpollutedair!Why?Iti***ecauseofus ofman-kind.Allowmetoexplainthisinthreeects airpollution waterpollutionandlandpollution.Firstly onairpollution...