But I meet so many problems and frustration then.

但是而后我遇到了很多的困难和挫折。

youdao

So performance evaluation for it is also more complicated and faces many new problems.

因此，对其进行性能评价也变得更为复杂，面临许多新的困难。

youdao

So performance evaluation for it is also more complicated and faces many new problems.

因此，对其进行性能评价也变得更为复杂，面临许多新的困难。

youdao