1.It's freezing. / It's freezing cold. 太冷了。太冻了。
2."I'm freezing." / "I'm frozen." 我好冷。
3.cold snap / cold front / cold blast 冷空气，寒流
4.It's freezing in here. Do you mind closing the window? 这里冷死了。你介意关上窗户吗？

5.chilled to the bone: 冷到骨子里
chill: a feeling of being cold
chilly: adj. 寒冷的 e.g.
There's a chill in the air this morning. 今天早上很冷。
The bathroom gets chilly in the winter. 冬天浴室很冷。
Let's go home. I'm chilled to the bone. 回家吧，我冷到骨头里去了。
6.I'll be frozen to death. 我要冷死了。
7.freezing one's butt off e.g. I'm freezing my butt off. 我觉得很冷。
8.biting wind / biting cold: biting wind or cold is so cold that it makes you feel very uncomfortable.