Fact: Snoring may be harmless, but it can also be a symptom of a life-threatening sleep disorder called sleep apnea, especially if it is accompanied by severe daytime sleepiness.

事实：打鼾可能是无害的，但它也可以是威胁生命的睡眠障碍的一个症状，这一睡眠障碍叫做“睡眠呼吸暂停”，特别是当它伴有严重的白天的嗜睡症状的时候。

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This will result in PHP reporting a warning every time an uninitialized variable is used, each bad file access, and other (mostly) harmless errors, but might also represent a potential attack vector.

设置更改后，每当使用未初始化的变量、进行错误的文件访问及发生其他（大多数）无害错误时，PHP 都会报告一条警告消息，但也存在这是一个潜在攻击矢量的可能性。

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But this summer, they're also seeing a flood of attack ads run by shadowy groups with harmless-sounding names.

但今年夏天，人们也看到了一股由起着听起来无恶意的名字的影子团体发布的攻击性广告的洪流。

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"The stuff on the beach is harmless, but the Facebook entry also had address and personal information and that is a very different thing, " said Mr Black.

BBC: Security risks of social networks