不要空谈你的理论，你必须去实践它并检验它。

Don't prattle about your theory. You must practise it and prove it.

youdao

我会努力的完成我答应自己的事情，我会做到我以前立下的志愿和理想，我不会让他们永远都是空谈和理论，我相信自己可以。

I'll finish my promise to yourself, I'll do the volunteer and before me, I will not let them are always talk and theory, I believe I can.

youdao

如果有了正确的理论，只是把它空谈一阵。

If we have a correct theory but merely prate about it.

youdao

如果有了正确的理论，只是把它空谈一阵。

If we have a correct theory but merely prate about it.

youdao