And the announcement a month later of a non-aggression treaty between Germany and the Soviet Union gave Tokyo even more cause for concern.

VOA: special.2011.05.26

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 he says it is cause for concern because it is a new strain, and people have not built up an immunity to it.

VOA: standard.2009.05.01

Prime Minister Abhisit Vejjajiva, who is traveling to the United States this week, told reporters prior to his departure the doctors had assured him the king's health was not a cause for concern.

VOA: standard.2009.09.21

"For all those whose cares have been our concern, the work goes on, the cause endures, the hope still lives and the dream shall never die."

VOA: special.2009.09.13