noun一天,一日;白天,白昼;时期,时代;(指过去)有一天;(指将来)有朝一日;后天;前天;几天前;如今,现今
nouna time of 24 hours from midnight to the next midnight
nounthe time when it is light outside; the hours of the day when you are not sleeping
nouna time in the past
nounon a certain day in the past
nounat some time in the future
nounnot tomorrow, but the next day
nounnot yesterday, but the day before
nouna few days ago
nounused to talk about the present, especially when you are comparing it with the past