The effect of the bubble-pulse repetition is to give an oscillatory and hence unsatisfactory reflection record . 气泡脉冲的重复效应，会造成一种充满振荡波形的、无疑也是令人烦恼的反射记录。
One of the most important, most difficult, and most exasperating unsolved problems of operator theory is the problem of invariant subspaces . 算子理论中最重要、最困难也最令人烦恼的未解决问题之一就是不变子空间问题。
What bothered him was that churchill might use the incident to pretend to germany's allies that hitler was extending a peace feeler . 使他感到烦恼的是，邱吉尔可能利用这次事件向德国的盟国诡称，希特勒正在伸出和平的触须。
What ’ s troubling us is our not having enough manpower 使我们烦恼的是人力不足。
She looked at her son with a look of annoyance 她带着烦恼的表情看着她的儿子。
A life free from all worry just doesn ' t exist 完全脱离烦恼的生活是不存在的。
Those problems that had troubled me became serious 使我烦恼的那些问题变得严重了。
Time , however , introduced food for reflection 然而，烦恼的事随着时间的推移出现了。
He who peeps through a hole may see what will vex him 偷窥者会看到使自己烦恼的事。
Trying to defend against this pesky , troublesome species 对付这些讨厌又烦恼的物种
