人类活动已经对生态系统造成严重破坏。
Human activities have given rise to severe damage to the ecosystem.
暂无解析
工作压力过重会导致抑郁，焦虑，甚至自杀。
If you compare the quality of our good with that of other country, you will see our price is very reasonable.
Student or work?
Inordertohelpyoutodevelopbusinessinthisline,wearepreparetoofferyouadiscountof5%.
