年的由来英文是Origin of the year。
例句：
1、在商代，人们在新年的开始向上天和祖宗献祭牺牲品，这就是年的由来。
The Spring Festival originated from offering sacrifices to gods and ancestors at the beginning of the year in the period of The Shang Dynasty in China's history.
2、过年是中国民间最隆重盛大的传统节日，是集祈福攘灾、欢庆娱乐和饮食为一体的民俗大节。
Chinese New Year is the most grand traditional festival among Chinese people. It is a folk festival integrating blessing, disaster fighting, celebration, entertainment and diet.
3、关于年的由来，有一个传说。相传在远古时候，我们的祖先曾遭受一种最凶猛的野兽的威胁。
There is a legend about the origin of the year. It is said that in ancient times, our ancestors were threatened by one of the most ferocious beasts.
4、据说年这种凶兽，又叫"夕"，所以过年又称为"除夕"。
It is said that this fierce beast is also called "Xi", so the new year is also called "New Year's Eve".
