例句
The refugees come across the border in vast numbers.
大量难民涌过边境。
In the past five years, there has been a vast improvement in graduation rates.
过去的五年内，毕业率大幅度提高。
The refugees come across the border in vast numbers.
大量难民涌过边境。
In the past five years, there has been a vast improvement in graduation rates.
过去的五年内，毕业率大幅度提高。