一月份的日子比十二月份的日子要长一些。

The days in January are a bit longer than those in December.

我们休假一直到十二月份。

We are on leave until December.

他们经常在十二月份去滑雪。

They often go skiing in December.

你可知现在已是十二月份了。

It's already December, you know.

莫扎特死于1791年的十二月份

Now Mozart died in December, 1791.

我十二月份最忙。

I am busiest in December.

白天短了，因为现在已是十二月份。

The days are short, for it is now December.

这是这个地区典型的十二月份气候。

It is typical December weather for this region.

是啊。你可知现在已是十二月份了。

Yeah. It's already December, you know.

害怕月初，尤其是十二月份的月初。

I am afraid of the beginning of month , especially December.