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sensor
[COUNTABLE]
Coming into contact with a sensor picket in 12 seconds.
And can you tell the gardener to check the sensor on the sprinklers?
We could connect it through an optical sensor.
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detector
,
detecter
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detektor, wykrywacz, czujnik
[COUNTABLE]
I found this in the park using a metal detector.
You pass through an airport metal detector and they know exactly what you're carrying.
Do they still have that metal detector at your school?