这种自行车可以折叠，携带方便，在旅行中或交通堵塞时特别有用绿。
This kind of bicycle can be folded in half and handy to carry around, especially useful during traveling and traffic jams.
世行认为，城市化的真正症结就在于此，而非与日俱增的贫民窟或交通堵塞。
These, the bank thinks, are the real problems of urbanisation, not the multiplication of slums or congestion.
如果有意外的事情发生，比如交通堵塞或突然下雨，你会怎么做？
What will you do if anything unexpected happens, like heavy traffic or a sudden rain?
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