2 sentences

1. 此外，唱圣诞颂歌也是圣诞夜的重要内容。

   cǐ​wài, chàng shèng​dàn sòng​gē yě shì shèng​dàn​yè de zhòng​yào nèi​róng.

   In addition, singing Christmas carols is also an important part of Christmas Eve.

   Source: CCMatrix

2. 在北欧国家，最重要的圣诞庆典会在圣诞夜进行。

   zài běi'ōu guó​jiā, zuì zhòng​yào de shèng​dàn qìng​diǎn huì zài shèng​dàn​yè jìn​xíng.

   In the Nordic countries, the most important Christmas celebration takes place on Christmas Eve.

   Source: CCMatrix