天色的英文：
time of the day

参考例句：

It was a gray, chilly day.
那天天色阴沉，凉气逼人。

The shadows lengthen.
天色渐黑;年纪渐老;死期已近。

We laughed and put them on, three aging musketeers in the highest spirits despite the gray and drizzling day
我们呵呵大笑，拿来系上，虽然天色阴暗，细雨纷飞，我们这垂垂老朽的三剑客却开心得无以复加。

It was getting dark.
天色渐暗。

It is getting darker and darker.
天色越来越暗。

A cloudy sky may deter a man from undertaking a journey.
阴暗天色有时使人不敢启程。

Look at the weather when you step out;look at man’s faces when you step in.
出门看天色进门看脸色

The sky gradually darkened at the approach of a storm.
天色渐昏，大雨欲来。

In the gathering gloom of a winter's afternoon
在冬天的一个下午，天色越来越暗

Bertha was looking out of the window at the bleakness of the day
伯莎望着窗外晦暗的天色。

time是什么意思：
n. 时间；（一段）时光；时机；机会；历史时期；时代；次；回；倍
v. 测定…所花时间；调准；调整；测定…所花时间
adj. 时间的；定时的；定期的；分期的

discrimination time
辨别时间辨别时间

It is time to go.
该走了。

They are not in step with the times.
他们跟不上时代的步伐。

This was for the time only.
这只是一时的权宜之计。

What for this time?
这次又是为什么？

day是什么意思：
n. 一天；白昼，白天；工作日；时代，时期

Things go on day by day.
事情逐日进行着。

Day by day the situation is improving.
情况在一天天地好转。

Like this, day after day.
就这样，日复一日。

It was a fateful day.
那是个不祥的日子。

Meantime, from day to day they endure.
同时，一天天他们捱了下去。