大年三十

Chinese New Year’s Eve; Spring Festival Eve; the last day of a lunar year; the last day of a year by lunar calender

节的前一天人们俗称为“大年三十”，这一天的晚上，称作除夕，也叫“大年夜”。

This evening is called Chuxi, or the night of the year.

例句：

在春节前夕，也就是大年三十，爸爸和我在门上贴了春联。

On the eve of the Spring Festival, my father and I had the red antithetical Spring Festival couplets on our doors.

万观众在大年三十的中国央视春晚上收看了这个魔术表演。

Hundreds of millions of people watched the magic trick during a China Central Television gala on the Jan.30 eve of the Lunar New Year festival.