正常情况下，地面小鼠一胎也就生育5到7只，结果这位“航天小鼠妈妈”三胎分别生了9只、10只和9只，每胎都多出来两三只。
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"Our internet-connected devices use a proprietary radio system, which links the alarms together," says Nick Rutter, co-founder and chief executive of FireAngel. The connected alarms can send push notifications to users' phones via their home internet router.
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