研究人员说，要确信是暗物质，两个信号还是太少了，因为经过计算得知其中的一个信号事件来自于背景噪声 。

Two signals is just too few to be confident of, they said, because their calculations predicted about one false event from background.

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测试人员经常会抱怨，分配给他们的时间太少了：例如，“要在这么短的时间内测试那么多内容。”

Testers frequently complain that little time is alotted to them: i.e., So much to test in such a short time.

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研究人员说，孩子降世的压力触发了抑郁症——例如，睡眠太少，责任的改变以及处于父母关系中产生的额外压力。

The researchers say the stresses of having a child trigger the depression – such as too little sleep, changed responsibilities and extra pressures being placed on the parents' relationship.

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