Whatever the motives behind these messy legal wranglings, the threat to Skype's future is real enough to cause concern among those who use it.

不论在这些凌乱的法律争辩背后隐藏着什么样的动机，Skype危险前景的预兆已经真实得足以引起那些使用它的人们的担忧。

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Although that might cause concern for some people, forcing people to vote is definitely not the answer.

虽然这可能会引起一些人的关注，但强迫人们投票绝对不是解决办法。

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A far bigger cause of concern than the growth of national groups, however, is the increasing number of migrants who return to their countries of origin.

然而，比民族群体增长更令人担忧的是越来越多的移民返回其原籍国。

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As it neared the South Atlantic, however,storms began to cause great concern.

VOA: special.2009.12.23

So, if I wanted to cause you to feel moral concern for a fetus, I would do well to describe it as a pre-born child.

所以如果我想你对胎儿产生道德关怀，我最好就称它为未出生的婴儿。

耶鲁公开课 - 心理学导论课程节选

Although that might cause concern for some people, forcing people to vote is definitely not the answer.

也许这会让一些人担忧，但是强迫人们去投票绝对不是解决问题的方法。

对于义务投票制 - SpeakingMax英语口语达人

But the wording of the resolution, and the way it might be interpreted, continue to cause concern.

ECONOMIST: Time to make a deal | The

But the wording of the resolution, and the way it might be interpreted, continues to cause concern.

ECONOMIST: Time for a decision | The

While many owners choose to keep the animals as pets, the fate of some dogs continues to cause concern.

BBC: Plan to track retired greyhounds