不一会儿，看守开始打盹了。他的头越来越低，两个人都打起鼾来。
Presently the watcher began to nod; his head drooped lower and lower, both men began to snore now.
除了网络摄像头，许多其他高科技也越来越受欢迎。
Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular.
“客厅里的大象”就是家里的联网安全摄像头。这一设备的使用越来越广，有了它，人们在家就能安心了。
The elephant in your living room is your Internet-connected security camera, a device people are increasingly using for peace of mind in their homes.
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