smart doorbell

名词 n.

英文释义

名词 n.
  1. A doorbell equipped with a camera, microphone, motion sensor, etc. allowing the homeowner to see and communicate with the person at the door by means of a smartphone.
    — There are, of course, smart speakers (which roughly a quarter of American homes have) and smart thermostats, as well as smart thermometers, smart mattress covers, smart coffee makers, smart doorbells, and even, yes, smart toasters.

词形变化

smart doorbells plural
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