freewheeling
adj. 随心所欲的；惯性滑行的
n. 惯性滑行
例句
He has given up his freewheeling lifestyle to settle down with his baby daughter.
他已抛弃了自己随心所欲的生活方式，与他的小女儿一起稳定了下来。
《柯林斯英汉双解大词典》
On the descents, cyclists spin past cars, freewheeling downhill at tremendous speed.
在下坡道上，自行车手们飞快地掠过汽车，靠惯性极速冲下山去。
But the freewheeling nature of the Internet could surprise even Mr. Murong.
但网络的无拘无束让慕容感到震惊。
