1. Smoke detectors are fitted in all the rooms. 
   所有的房间都装有烟尘警器。
2. They conducted their investigation by sweeping handheld metal detectors over the seafloor. 
   他们用便携金属探测器扫描海底，进行调查。
3. The bottles are carried on the conveyer belts past a series of detectors. 
   传送带上的瓶子经过一系列检测。
4. Lions, for example, have vibration detectors in their paws and probably use them in the same way as scorpions use their vibration detectors -- to locate meals. 
   比如狮子在它们的爪子上就有感受振动的器官，其作用就像蝎子感受振动的器官一样，用以发现食物。
5. With radar equipment and heat radiation detectors, these satellites can keep a constant watch on enemy nations. 
   有了雷达设备及热幅射探测器以后，这些卫星能够永久监视敌国的动向。

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