这是缩小他们之间差距的主要办法。

This is the chief way of narrowing the difference between them.

youdao

这是缩小他们之间差距的主要办法。

This is the chief way of narrowing the differences between them.

youdao

这是缩小他们之间差距的主要办法。

This is the chief way of narrowing the differences between them.

youdao