释义
v.
ride a bicycle with the pedals at rest, especially downhill
（尤指下坡时骑自行车）靠惯性滑行
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the postman had come freewheeling down the track. 邮递员骑着自行车顺着这条路靠惯性滑了下来。
[usu. as adj.
随心所欲（或不受约束、不计后果）地行动
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the freewheeling drug scene of the sixties. ６０年代自由放纵的吸毒场面。
n.
(free wheel) a bicycle wheel which is able to revolve freely when no power is being applied to it
（自行车的）飞轮。
a device in a motor vehicle transmission allowing the drive shaft to spin faster than the engine
（汽车的）自由轮，空转轮。