esentincludingbuses,subways,bicyclesandsoon. Andtheyalsohavetheiradvantagesanddisadvantages. Ontheonehand,theyaremorecheep. Andfromtheperspectiveofenvironmentalprotection,publictransportationcanpromotealowcarbonliving. Especially,peoplelivingincitiesaresobusywiththeirworkthattheyhavelittletimedoingexercise. ehealthieriftheygotoworkbybikeeveryday. Ontheotherhand,einconvenientonrainydaysbecausethereisnoshelterfromtherain. Inaddition,busesmustbecrowdedandyoucan'thaveaseatinrushhours. Andit'sawasteoftimewaitingforthebusesandsubways.Frommyperspective,weshouldputthepublictransportationinthefirstplaceunlessthereissomethingurgent. Thiscanrelievethetrafficpressureandreduceairpollution. Becides,thegovernmentshouldlaystressontheconstructionofinfrastructurebybuildingmoreroads,parkinglotsandsubwaysetc.