英英释义be vigilant, be on the lookout, be on one's guard, be careful
observe or determine by looking
look attentively
observe with attention
a period of time (4 or 2 hours) during which some of a ship's crew are on duty
the period during which someone (especially a guard) is on duty
a purposeful surveillance to guard or observe
the rite of staying awake for devotional purposes (especially on the eve of a religious festival)
a small portable timepiece
follow with the eyes or the mind
see or watch
find out, learn, or determine with certainty, usually by making an inquiry or other effort
a person employed to watch for something to happen