It's terribly cold here in Harbin.
哈尔滨这地方可真冷啊。
Yes. It's cold in December, but it's even colder in January.
是啊。12月份很冷，但 1月份更冷。
To what extent can the coldest, weather reach?
最冷冷到什么程度？
The lowest temperature can reach over 30 degrees below zero centigrade. It is so cold that the Songhua River freeze entirely.
最低温度可达零下30多摄氏度，冷到整个松花江都结冰。
Oh,that sounds very interesting.
哦，这听起来倒挺有趣。