(1)年(period of 365 or 366 days the Earth takes to go once round the sun，now commonly divided into 12 calender months)[C]：a common/leap～平年/闰年;a solar/lunar～太阳年/阴历年;a tropical～回归年;the turn of the～一年之初;all the～round 一年到头;ring out the old～and ring in the new 敲钟送走旧年迎来新年;

(2)一年的时间(period of time equal to a year but beginning at a different time)[C]：a five-～forecast/plan 五年预测/计划; In a～'s time he'll be a doctor.再过一年他就是医生了。It's just a～since I went to university. 我上大学有整整一年时间了。 The incident happened two～s ago.那件事是两年前发生的。～by～年复一年;～after～一年又一年;～in，～out 年复一年;

(3)年份(calendar year specified usu by a number)：this/last～今/去年;the～after the next 后年;in the～1977 在1977年;a good～for cheap eggs 鸡蛋价廉的好年头;in the～of our Lord 1358(fml)公元1358年;a calendar～历年;

(4)年龄(岁数)(age)[C，通常pl]：20～s old 20岁;begin to show one's～s 开始上年纪;a man in～s but a child in understanding 年老幼稚的人;look young for one's～s 看上去比实际年龄年轻;old beyond one's～s (见识、智力等)超出某人实际年龄;die in one's sixtieth～60岁死去;put/take～s on/off sb 使某人感到衰老/年轻;The boy seemed very mature for his～s.与其年龄相比，这个男孩似乎很成熟。

(5)数年(很久)(long time)[pl](infml)：～s ago 多年前;work for～s 工作多年;The country went through～s of turmoil.这个国家经历了多年混乱。〖同〗period，time，era，cycle;

(6)卫星年(period of planet's revolution round the sun)：Martian～is 867 of our days.火星年的时间相当于我们867天。