The hens won't lay in such a cold day.

这么冷的天母鸡不会下蛋的。

He was running outside in such a cold day.

他在这么冷的一天在外面跑。

There's nothing like a brisk walk on a cold day!

冷天出来快步走走，简直太舒服了。

It was a pretty cold day.

这是一个相当寒冷的一天。

It was rather a cold day.

那是个相当寒冷的日子。