This technique has been working for years; why isn't it good enough for XForms to use?

这种技术已经用了多年，为什么对XForms来说还不够好呢？

youdao

Dr Gray has been working for years on making vines resistant to these diseases by modifying their genes.

在加强葡萄对这些疾病的抗性方便，Gray博士目前已经进行了好几年的研究。

youdao

Scientists have been working for years on trying to harness the energy produced from walking, which theoretically is sufficient to power a light bulb, smart phone or even a laptop.

为了利用人们在走路过程中所产生的能量，科学家们已经探索了好多年。 理论上讲，这种能量足以满足灯泡、智能手机甚至是一部笔记本电脑的工作需要。

youdao

Darwin had been working on his theory for over twenty years when he published " On the Origin of Species."

VOA: special.2009.12.01

And scientists have been working on this for years and there's been progress, but it's still a very difficult challenge.

科学家们对此已经研究很久了,并取得了进展,但仍有很大挑战

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I had been working at a public Accounting firm for a couple of years.

我在一家会计事务所已经工作了几年。

为什么是会计学呢？ - SpeakingMax英语口语达人

We've been working for years on doing more and more in the United States.

BBC: Tim Cook

Here, Apple ( AAPL) and others have been working for years on ways to bypass TiVo Inc.

FORBES: Connect

Last week an inquiry condemned NHS consultants for allowing Mr Ledward to carry on working for years.

BBC: You are in: Health