Thunder crashed in the sky.

霹雳在空中炸响。

《牛津词典》

The sun was low in the sky.

太阳低挂在天空。

《牛津词典》

Lights were pulsating in the sky.

天空有闪烁的光。

《牛津词典》

Now they are stars in the sky, so they meet each other in lunar months,seventh in July, each year once.

VOA: special.2010.02.08

The Evening Star is the, roughly speaking, first heavenly body that's visible in the sky as it gets dark, at least at certain times of the year.

粗略说来,昏星就是,天黑时第一个能看见的天体,至少在一年的某个时间段是这样

耶鲁公开课 - 死亡课程节选

That water is separated, that bubble has opened up so we've got the sky created And we've got the waters collected in certain areas down here, And we've got sky.

水流被分开，形成了水泡,我们便有了天空,在那里某些地方也有一些水流汇集，我们便有了天空。

耶鲁公开课 - 旧约导论课程节选

The flash in the sky was also seen from Kanchanaburi province to the west of the capital.

CNN: Fireball lights up sky over Bangkok

The sun is beginning to sink in the sky, bathing the South Bank in a golden glow.

BBC: Twenty-one days out in London

Not some pie in the sky proposal that may pay dividends years down the road.

CNN: Commentary: You can blame Pelosi for Democrats' stumbles