luck的形容词形式是lucky；
luck
n.好运;幸运;侥幸;机遇;命运;运气；
v.靠运气，走运;凑巧碰上；
第三人称单数 lucks；
现在分词 lucking；
过去式 lucked
Her success was due in part to luck.
她的成功在某种程度上是由于运气好。
With a bit of luck, we\'ll finish on time.
如果我们运气好，就能够准时完成。
As luck would have it, the train was late.
不巧火车晚点了。
