Have you ever had someone try to explain something to you a dozen times with no luck?

你有没有遇到，一个人试着向你解释一件事十几遍，都没有成功的情况？

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Large goals such as these might seem daunting, especially if you've tried to chisel them down to size with no luck.

诸如这些的巨大目标可能会很让人气馁，尤其是你已经努力把它们减小了还是没有走运。

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Tea scholars are searching the area in Northwestern Anhui to find someone that still knows the technique with no luck.

茶叶学家正在安徽的西北地区寻找会制作黄茶的人。

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DirecTV and EchoStar have repeatedly asked the Federal Communications Commission to close the loophole, with no luck.

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He underwent knee surgery after that epic victory and returned in 2009 to win a clutch of tournaments on the PGA Tour, but with no luck in the four majors.

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In 2009, Copeland lost her management job at Circuit City and, with no luck securing a new one, decided she had the time to watch her daughter, now age 7, and her stepdaughters, now ages 9 and 11.

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