#Opportunity 机会 搜索结果
Theairwebreatheissofreelyavailablethatwetakeitfranted.Yetwithoutitwecouldnotsurvivemorethanafewminutes.Forthemostpart,thesameairisavailabletoeveryone,andeveryoneneedsit.Somepeopleusetheairtosustainthemwhi
