I sit at a desk, sometimes I use a computer.

我坐在办公桌前，有时我会用电脑。

youdao

If you sit at a desk all day, don't perch on the edge of your seat at work trying to sit up straight.

如果你要在桌子旁呆一整天，工作时别坐在椅子的边缘，要尽量坐直。

youdao

If you sit at a desk all day, make sure to schedule times to get up and walk around, or at least stand up and stretch.

如果你整天坐在桌旁，一定要安排好时间起床走动，或至少站起来伸展。

youdao

As soon as I'm finished speaking here, I will sit at that desk and I will sign a directive giving law enforcement, schools, mental health professionals and the public health community some of the tools they need to help reduce gun violence.

WHITEHOUSE: President Obama Introduces a Plan to Reduce Gun Violence

Like Sisyphus, I get up every morning, grab a cup of coffee, and sit at my desk.

NPR: Our Lives Are Ephemeral

Even when you're not exercising, you should make sure you sit at your desk the right way, says Jason Queiros, a chiropractor in Daytona Beach, Fla.

FORBES: Magazine Article