Trolley bus, as a possible future transport mode, may also fall into this category.

日后可能采用的无轨电车也属于这一类别。

youdao

Hold on tight to the trolley so that you don't fall out.

牢牢抓紧购物车，这样你就不会掉下去。

youdao

Hold on tight to the trolley so that you don't fall out.

牢牢抓紧购物车，这样你就不会掉下去。

youdao