After a long wait for bus no.20, two 20 number buses will always pull in together and the bus which you get in will be crowded than the other.

等了20路公交很久之后，两辆20路总会一块儿进站并且你上的那辆车会是更拥挤的那辆。

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Many city residents complain that it is so few buses in their city that they have to spend much more time waiting for a bus, which is usually crowded with a large number of passengers.

许多市民抱怨城市的公交车太少，以至于他们要花很长时间等一辆公交车，而车上可能已满载乘客。

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Many city residents complain that it is so few buses in their city that they have to spend much more time waiting for a bus， which is usually crowded with a large number of passengers。

许多市民抱怨城市的公交车太少，以至于他们要花很长时间等一辆公交车，而车上可能已满载乘客。

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The best way to learn about Chicago's impressive parade of buildings is through a tour with the Chicago Architecture Foundation, which operates a number of walking and bus tours in the Loop and other neighbourhoods.

BBC: The infamous architecture of Chicago