Definition: extremely big Level: B2
公司在研究上投入了巨额资金。
The company invested a ___vast sum of money in research.
我们在旅行中驾车穿过了广阔的森林区域。
We drove through ___vast areas of forest during our trip.
绝大多数学生上公立学校。
The ___vast majority of students attend public schools.
