Subways in first tier cities such as Beijing and Shanghai can be crowded, especially during peak-hours. And it's not uncommon to see the "life or death race" that ensues when the subway doors open and people rush to fill the vacant seats, but some Shanghai subway goers, have decided to "sit" this race out by bringing their own stool! Is this a safe solution for those who want to sit on the subway? Let's talk about it, what's goin on guys?
n. 解答,解决办法,溶解,溶液