day

中文： 白天、天、一天、白昼

1. The time when the Sun is above the horizon and it lights the sky. · day and night; I work at night and sleep during the day.
2. A period of time equal or almost equal to a full day-night cycle, being 24 hours long. · I've been here for two days and a bit.
3. The time taken for the Sun to seem to be in the same place in the sky twice; a solar day.
4. The time taken for the Earth to make a full rotation about its axis with respect to the fixed stars; a sidereal day or stellar day.
5. A 24-hour period beginning at 6am or sunrise. (informal) · Your 8am forecast: The high for the day will be 30 and the low, before dawn, will be 10.
6. A period of time between two set times which mark the beginning and the end of day in a calendar, such as from midnight to the following midnight or (Judaism) from nightfall to the following nightfall. · The day begins at midnight.· Monday is the first day of the week in many countries of the world.
7. The rotational period of a planet. · A day on Mars is slightly over 24 hours.
8. The part of a day period which one spends at one’s job, school, etc. · I worked two days last week.

复数 days