He is working on the inventions in human health.
他致力于人类健康方面的发明。
Nowadays, scientists are working on improving health care robots.
如今，科学家们正致力于改进医疗机器人。
In reality, he was just happy working on a ranch and making a dollar a day.
实际上，在农场工作，每天赚一美元，他就很开心。
People around the world are working on reducing the causes of global warming.
全世界的人们都在致力于减少导致全球变暖的原因。
The scientists are still working on inventing new methods of reaching outer space.
科学家们仍致力于发明到达外层空间的新方法。
A year later, he was leading a team of 100 scientists and engineers working on the invention.
一年后，他领导了一个由100名科学家和工程师所组成的团队，致力于这项发明。
Linda spends all her time working on the garden.
琳达用所有的时间在那座花园里劳作。
He hasn't said he'll do it yet, but I'm working on him.
他还没说他会做这事，不过我正在设法说服他。
He gained valuable experience whilst working on the project.
从事这项工程使他获得了宝贵的经验。
The police are working on the supposition that he was murdered.
警方正根据他被谋杀的假定展开调查。
We are working on the assumption that everyone invited will turn up.
我们假定了每一个人都会应邀出席并正就此作出安排。
Manufacturers are working on a new generation of cheaper digital radios.
厂家正在生产新一代更便宜的数码收音机。
People speculate about virtuality systems, but we're already working on it.
人们对虚拟系统尚存疑虑，而我们已经在开发了。
The university has been working on hypersonic technology for nearly 16 years.
该大学研究极超音速技术已经近16年了。
You should get into the routine of saving the document you are working on every ten minutes.
你应该养成每十分钟将正在编辑的文件存盘一次的习惯。
James Fox is best known as the author of "White Mischief," and he is currently working on a new book.
詹姆斯·福克斯以其作品《欲望城》最为知名，目前他正在写一本新书。
Some engineers are working on a Fire Recharger.
一些工程师正在研制一种火力充电器。
—May I use your computer? —I'm sorry. I'm working on it.
——我可以用你的电脑吗？ ——很抱歉。我正在用。
他仍在研究水稻。
He kept working on this dream for years.
多年来，他一直为这个梦想而努力。
She was working on a large piece of iron.
她正在加工一大块铁。
Shouldn't she be working on her annual report?
她不是应该在写年度报告吗？
He was still working on rice when he was very old.
他在非常年老的时候仍在研究水稻。
My team is working on a spice vending machine for spices.
我的团队正在设计一个香料自动售货机。
When working on them, she became more and more confident.
在做它们的过程中，她变得越来越自信。
I was working on the computer when Frank called me last night.
弗兰克昨晚打电话给我时，我正在用电脑工作。
It may sound silly, but it's something scientists are working on.
这听起来可能很傻，但这是科学家们正在研究的东西。
Lonnie got the idea for this toy while working on another invention.
朗尼是在研究另一项发明时想到这个玩具的。
Margaret spent several hours working on the Christmas cards carefully.
玛格利特花了几个小时仔细地制作圣诞卡片。
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