切勿让陌生人进门，前门最好装设鹰眼（peep-hole），查看对方，若有修缮工人要进入，先查看其识别证并查询其，并去电求证。室内外的灯，可装上定时器，不定时调整开启关闭。
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peep hole 猫眼
glass peep hole 玻璃检视孔
fire door peep hole 火门窥孔
peep hole camera 针孔摄影机
bimetal peep hole 双金属标孔
peep hole optimizer 窥孔优化程序
glass frosted peep hole 玻璃观察孔
N-COUNT A peephole is small hole in a door or wall through which you can look secretly at what is happening on the other side. (门或墙上的)窥视孔
The above is only the power of the individual peep-hole view, thoughtful.
以上只是个人的了一孔之见，权当抛砖引玉。
He bounded rather than climbed upon his commode, and resumed his post near the little peep-hole in the partition wall.
他不是爬上那抽斗柜，而是一纵身便到了柜上，他又守在隔墙上面那个小洞的旁边了。
Sights were fixed, pre-adjusted for 100 yards distance, peep hole rear and blade front.
景点是固定的，预先为100码的距离，窥视孔后方和刀片前调整。
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