Walkingwillbebannedonescalatorsaspartofatraildesignedt...
问题详情： Walkingwillbebannedonescalatorsaspartofatraildesignedtoreducecongestion(拥堵)atsomeofthecountry’sbusieststations. Inthefirstmoveofitskind,alltravelerswillbeforcedtostandonbothsidesofesca...