luck的形容词形式为lucky。
lucky：adj.有好运的；运气好的；幸运的；好运带来的；
luckily：adv.幸好;好在
She was lucky enough to be chosen for the team.
她很幸运被选中加入此队。
With such a weak heart she was lucky to come through the operation.
她的心脏很弱，手术后能活下来真是幸运。
You were dead lucky to get that job.
你得到那份工作，真是太幸运了。
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