In our human society, when a child's parents meet their unfortunate deaths for a certain reason or reasons, or its parents become too sick to look after it, this child will have to find a foster family, especially when it is a baby or at a very young age.

在我们人类社会中，当一个孩子的父母因为某种或多种原因不幸去世，或者其父母病重而无法照顾自己时，这个孩子就得找一个寄养家庭，尤其当他还是个婴儿或年龄较小时。

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For a certain reason she began to cry.

由于某种原因，她开始哭起来。

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I'm very sorry not to tell you the truth for a certain reason.

由于某种原因，我非常抱歉不能告诉你真相。

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If there is atmosphere in the passage I'm about to quote from Macbeth, it must be atmosphere of a certain kind and there for a certain reason.

如果下面这篇《麦克白》里的选段有所谓的“气氛“,那这种气氛一定因为某种原因以某种形式存在着。

耶鲁公开课 - 文学理论导论课程节选

Auto-immune diseases are caused when the immune system, for some reason, decides that a certain type of the body's own cells are foreign and starts attacking them.

BBC: Body may cause lethal heart weakness

However, workers seem to like them, and for good reason: because they promise a certain level of pension, companies rather than employees carry the main risk.

ECONOMIST: Pensions: How's your pension doing? | The

However committee chair Darren Millar pointed out that there was a valid reason for the level of scrutiny on certain grants as many of them were extremely complex.

BBC: Public Accounts Committee