dog·watch /ˈdɔgˌwɑʧ/
兩小時換班的值班,暮更
Dog·watch n. Naut. A half watch; a watch of two hours, of which there are two, the first dogwatch from 4 to 6 o'clock, p. m., and the second dogwatch from 6 to 8 o'clock, p. m.
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dogwatch
n : either of two short watches: from 4-6 pm or 6-8 pm