50词以内年兽的故事英文版如下：

It is said that nian has a big head and a small body, with a length of more than ten feet.

（据说年兽头大身小，身长十数尺，眼若铜铃，来去如风。）

When grunting, it sounds like "nian ~", so it is named nian beast.

（嗷叫时发出“年~”的声音，故名年兽。）