folding bike

• 折叠式自行车

folding bike的用法和样例：

例句

1. The Nanjing subway's ban on folding bikes and food on trains beginning next year has sparked a heated discussion among the public.
   南京地铁从明年起将开始禁止乘客在地铁列车上携带折叠自行车和饮食，在市民中引发了激烈的讨论。