说到汽车，除了呼吸排放的二氧化碳，自行车不排放有毒气体。

Green. Speaking of cars, apart from the CO2 from your breathing, bikes don't release toxic gases.

youdao

说到汽车，除了呼吸排放的二氧化碳，自行车不排放有毒气体。

Green. Speaking of cars, apart from the CO2 from your breathing, bikes don't release toxic gases.

youdao