- 問題詳情:Morecycling,betterpublictransportandcarbans…Placesallovertheworldaretakingarangeofmeasurestolowertrafficpollution.ParisParisbanscarsinmanyhistoriccentraldistrictsonweekends,placesodd-even(單雙日製的)bansonvehicles,makespublictransportfreedur...
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