These categories overlap some, but each stands as a different kind of barrier to entry.

这三类问题存在一定程度的重叠，但是每一类都代表一种不同类型的障碍。

youdao

These categories overlap some, but each stands as a different kind of barrier to entry.

这三类问题存在一定程度的重叠，但是每一类都代表一种不同类型的障碍。

youdao