year

名词 year:

1. a period of time containing 365 (or 366) days
   同义词：twelvemonth, yr
2. a period of time occupying a regular part of a calendar year that is used for some particular activity
3. the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun
4. a body of students who graduate together
   同义词：class

1. He is 16 years old.
   他16 岁了。
2. I've known her for years.
   我认识她好几年了。

year

n.Abbr. yr.,y.（名词）缩写 yr.,y.

The period of time during which the earth completes a single revolution around the sun, consisting of 3'5 days, 5 hours, 49 minutes, and 2 seconds of mean solar time. In the Gregorian calendar the year begins on January and ends on December 3 and is divided into 2 months, 52 weeks, and 3'5 or 3'' days.Also called calendar year
年：地球完成围绕太阳运转一周的时段，由3'5天、5小时、49分和2秒组成的平均太阳时，根据格里高利历，一年开始于月日结束于2月3日，被分成2个月、52个星期、3'5天或3''天也作 calendar year
A period approximately equal to a year in other calendars.
年：在其它历法中约相当于一年的时间
A period of approximately the duration of a calendar year:
年：大约相当于一历年的时间：
例句：
We were married a year ago.
我们一年前结的婚

A sidereal year.
一恒星年
A solar year.
一太阳年
A period equal to the calendar year but beginning on a different date:
年度：与历年长度相等但初始日不同的时期：
例句：
a tax-reckoning year; a farming year.
税务结算的一年；农耕年

A specific period of time, usually shorter than 2 months, devoted to a special activity:
年度：专门用于从事某项活动的时期，通常短于2个月：
例句：
the academic year.
学年度

years Age, especially old age:
years 年龄，尤指老年：
例句：
I`m feeling my years.
我觉得年纪大了

years An indefinitely long period of time:
years 不确定的很长一段时间：
例句：
it`s been years since we saw her.
我们已经有好几年没有见到她了

来源：
Middle English yere
中古英语 yere
from Old English gôar * see yôr-
源自 古英语 gôar *参见 yôr-