Work with your feet flat on the floor and your back against the chair.

工作时你的脚应该平放在地板上，而背部要靠在椅子上。

youdao

Sit in a different chair at breakfast or take a different route to work.

坐在不同的椅子上吃早饭或者采取不同的方法去工作。

youdao

While at work, sit upright, with a straight-back, in your chair.

工作时可以坐直，坐在椅子上要挺直腰杆。

youdao

Soon after he had finished his work he sank into a chair by the side of the table upon which the body lay.

VOA: special.2011.02.26

But chair of the work and pensions select committee Dame Anne Begg said the change would cut disabled people's independence.

BBC: Welfare Reform Bill part two

As one of the foremost experts on economic crises--and how to solve them--my next nominee, Christina Romer, will bring a critically needed perspective to her work as chair of my Council of Economic Advisors.

FORBES: Magazine Article

In fact, the Energy Committee, thanks to the work of its Chair, Senator Jeff Bingaman, has already passed key provisions of comprehensive legislation.

WHITEHOUSE: President Obama Pushes Clean Energy