This is going to be hard and difficult work.

这将是一个艰巨的工作。

youdao

This is going to be hard and difficult work.

这将是艰苦卓绝的工作。

youdao

The work of the man who assembles power lines is hard and difficult.

的工作，该名男子谁组装电力线路是很难和困难。

youdao

It was hard and difficult land.

VOA: special.2010.05.08

Why has it been so hard and why does it continue to be difficult to identify these pluripotent cells within tissues?

为什么会那么难呢,为什么在组织中识别多能干细胞,始终困难重重呢

耶鲁公开课 - 生物医学工程探索课程节选

This proves to be really difficult in the real world because in the real world it's hard to pull apart genes and environments So, you and me will have different personalities ? Why?

这在现实中是很难区分的,因为现实中很难,把基因和环境分开来讲,你和我有不同的性格,为什么？

耶鲁公开课 - 心理学导论课程节选

Is it long, hard and difficult, and are the causalities painful to us, even one?

CNN: McCain targets message to Clinton backers

I've learned a hard and difficult lesson considering the childhood environment that I was brought up in - not to discriminate against any plant or creature.

BBC: Norfolk - Chris Skinner's wildlife haven

Make no mistake, there's more hard work ahead and more difficult choices to make.

WHITEHOUSE: President Obama��s Press Conference on the G20 Summit