美 [baɪ lʌk]
侥幸地：偶然而非特别技能地。
侥幸地(by luck), 此释义来源于网络辞典。
... circumstantially 因情形地 by luck 侥幸地 unexpectedly 未料到地 ...
侥幸地
He achieved his aim more by luck than judgement.
他达到目的主要是靠运气而不是靠判断力。
Success does not come by luck but through specific actions on our parts.
成功并非来自运气，而是来自我们的具体行动。
If you happen to make it to the goal, it will have been by luck or chance and is not repeatable.
如果你碰巧实现了一个目标，你可以靠运气或者机会，但是运气或机会是没有重复性的。
He has been followed, day by day, year by year, by a strange luck.
VOA : special.2009.01.03
by luck or by inside information or by something, while there's sort of a big academic debate.
单纯的用运气或者内幕消息或者其他东西来解释，尽管对此学术界也存在着极大的争论。
金融市场课程节选 : 耶鲁公开课
The romance heroine is often threatened with rape, but by her cleverness or by good luck or a concatenation of forces ; she can always invariably avert that tragedy; and by the end of the work she can present herself to her future husband as a virgin.
这位传奇的女英雄总是被强奸所威胁，但是多亏了她的机敏，或是走好运，或是一连串的军队暴力,她总是能避免悲剧;,在作品的最终,她呈现在未来丈夫面前的仍是一个处女。
弥尔顿课程节选 : 耶鲁公开课
He has been followed, day by day,year by year, by a strange luck.
VOA : special.2010.03.27
So far attacks in the U.S. - at least those that are publicly known -- have been thwarted by heightened security awareness and increased counterterrorism measures from the U.S.side, as well as by both bad luck and professional incompetence on the terrorists' part.
VOA : standard.2010.05.05
On the other hand, a marketer-led process is likely to achieve positive results by luck alone.
We did not achieve global leadership in the last century by luck or by happenstance.
By luck, the rover just happened to roll past a spectacular example of the conglomerate.