He was very happy when he saw the cloudless sky.

一看到晴朗的天空，他就十分开心。

The moon looks very bright on a cloudless night.

在无云的夜晚，月亮显得非常明亮。

As we approached the coast, the sky became cloudless.

当我们靠近海岸时，天空变得万里无云。

The sun shone brightly in a cloudless sky.

太阳在无云的天空中明亮地照耀着。

There were swallows in the cloudless blue sky.

燕子在无云的蓝天上飞翔。

The next day dawned cloudless and fair.

第二天天亮了，万里无云，天朗气清。

A cloudless, deep-blue sky looked down on them, for the wind had driven away every little cloud in the night.

万里无云，湛蓝的天空俯视着他们，风把夜晚的每一片云彩都吹走了。

It was a calm and cloudless day.

那是个无风无云的天气。