Thesurfaceofourearthislimited.Ifweleavetoomuchfootprintonourenvironment,wewilloverdrawthefutureofourearth.
保护措施：
1protectourenvironmentgettingstartedfromtinythings,suchasthrowingrubbishintodustbin.
2Educatethepublictoprotectourhometogether.
3livealowcarbonlife
