The hill appeared as a black mass in the distance.

远远地看去，那座山是黑魆魆一片。

《牛津词典》

One couldn't make out what the dark mass was from a distance.

远处黑压压的一片，看不清是些什么东西。

《新英汉大辞典》

The scientists used the Hubble to figure out the direction of the star's travels and the distance from the galactic center, along with the star's mass, age and speed.

科学家们利用哈勃望远镜计算出该恒星行进的方向和离银河系中心的距离，连同他的质量、年龄和速度一起计算。

youdao

By the end of the next war these were long outdated, for the age of weapons of mass destruction had dawned, along with long-distance missiles and the involvement of civilian populations in aerial bombing campaigns.

ECONOMIST: 20th-century history (2): ...then the ethics | The