相信你一定能在这里学到有用的知识，并让自己得到锻炼和提高。

We assure you that you can learn and practice a lot here.

youdao

相信你一定能在这里学到有用的知识，并让自己得到锻炼和提高。

We assure you that you can learn and practice a lot here.

youdao