adj.广阔的；巨大的；大量的；巨额的n.浩瀚；广大无边的空间； 双语释义：adj.(形容词)巨大的,广大的,广阔的; 大量的 very large and wide; great in amount or especially in area英英释义： vast[ vɑ:st, væst ]adj.unusually great in size or amount or degree or especially extent or scope"at vast (or immense) expense";