This is the 2585th most frequent Chinese word.
自行车
Bicycle.
'自行车' refers to the mode of transportation used in the action performed actively by the subject.
我每天骑自行车去工作。
I ride a bicycle to work every day.
'自行车' identifies the objects being described regarding their condition and need of maintenance.
这些自行车都坏了，需要修理。
These bicycles are broken and need repair.
'自行车' functions as the object spoken about in a personal context for borrowing.