vast

英 [vɑːst] 美[væst]

1. unusually great in size or amount or degree or especially extent or scope;: "huge government spending"; "huge country estates"; "huge popular demand for higher education"; "a huge wave"; "the Los Angeles aqueduct winds like an immense snake along the base of the mountains"; "immense numbers of birds"; "at vast (or immense) expense"; "the vast reaches of outer space"; "the vast accumulation of knowledge...which we call civilization"- W.R.Inge

1. In the cities vast crowds have been demonstrating for change.: 在城市里，大批的人群举行示威游行，要求进行变革。

2. Portugal and Spain had possessed vast empires that waxed and waned.: 葡萄牙和西班牙都曾是经历了兴衰的大帝国。

3. This vast archive has been indexed and made accessible to researchers.: 这个存量巨大的档案室的所有文件都已编了索引，可供研究人员使用。

4. The pollution has already turned vast areas into a wasteland.: 污染已经使大片地区沦为不毛之地。

5. Compact discs have brought about a vast improvement in recorded sound quality.: 激光唱片极大地提高了录音的音质。