But that's their hard luck,not his.

VOA: special.2010.03.25

Most of the luck is bad; it's hard to succeed, and with some combination of luck, skill, determination and hard work all of that will decide which of these farmers will be successful and which will not.

靠投机取巧是很难成功的,只有包含着运气,能力,意志和勤奋的所有因素才能角逐出,哪些农民会获取成功,哪些会遭受失败

耶鲁公开课 - 古希腊历史简介课程节选

That is the hard work, and being focused, and having a little luck, of course.

当然这要靠努力、专注，还有一点点运气。

事业就是挑战 - SpeakingMax英语口语达人