兩小時換班的值班,暮更
Dogwatch \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. --Totten.
dogwatch n : either of two short watches: from 4-6 pm or 6-8 pm