也许每只雌蜂都有自己的气味印记，能够区别自己的巢套板之家和其他数以百计(如果不是数以千计的话)看起来类似自己巢穴的家。
Perhaps each female has her own signature scent that enables her to differentiate her nesting-board home from the hundreds, if not thousands, of others that look just like hers.
比如，最近通过朋友之家互相传播的Koobface病毒已经影响了成千上万的Facebook用户。
The recent Koobface virus infected thousands of Facebook users, for example, as it was passed along from friend to friend.
平均来说，一个普通四口之家每月用电量为800千瓦时，而大部分住宅屋顶太阳能电池板的发电量低于10千瓦。
A typical family of four people USES, on average, 800 Kwh per month and most residential rooftop units are of under 10kw capacity.
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