例句：
It was perceptibly colder.
天气明显地冷了。
The air became colder as we ascended.
随着我们往上攀登，空气就寒冷起来。
The wind-chill factor will make it seem colder.
风寒系数大，会使人觉得比实际温度更冷一些。
What is the coldest object in space?
太空里最冷的物体是什么？
This is the coldest day in ten years.
这是10年来最冷的一天。
It is, of all distresses, the coldest.
这是一切穷困中最冷酷无情的穷困。