The problem with this approach is that in practice, it turns out to be way too hard to maintain 2 sets of properties.

很明显，这种方式的问题在于在实际应用中很难维护两套属性。

youdao

The problem with this approach is that in practice, it turns out to be way too hard to maintain 2 sets of properties.

很明显，这种方式的问题在于在实际应用中很难维护两套属性。

youdao