adjective [原级] 巨大的，广大的
She once ruled over a vast empire. 她曾统治过一个幅员辽阔的帝国。
noun [抽象名词] <古>广阔空间
He stared out at the vast emptiness that was the sea. 他凝视着那片浩瀚无垠的汪洋大海。
- vast 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 43 Are there strangers in space?
She once ruled over a vast empire. 她曾统治过一个幅员辽阔的帝国。
He stared out at the vast emptiness that was the sea. 他凝视着那片浩瀚无垠的汪洋大海。
