Not hard effortful-it is hard tricky.

不是难在需要努力上——而是很难处理。

Marked by a painfully slow and effortful manner.

以痛苦的迟缓和需要努力的方式为特点。

This structured knowledge is built by years of effortful study.

结构化知识非历经数年苦功不可得。

It takes about ten years of effortful study to become an expert

成为一名专家=十年的时间+刻苦学习

Your training has to be not only consistent, but also effortful.

训练不仅要持续，而且要努力。