If you sit down or lie down, you will put your feet up.

如果你坐下或躺下，你会感到放松。

youdao

Can you continue to do what you were doing or do you have to sit down or lie down?

你还能继续你正在做的事情，或必须坐下来或躺下来？

youdao

But I took long breaks during the day so that I could sit or lie down somewhere to rest my back and legs.

NEWYORKER: The House Behind a Weeping Cherry

It often intensifies when you lie down or inhale deeply.

CNN: Pericarditis

Several months ago, Murray says the panel ruled that the altitude tent violated the spirit of sport, because it required the athlete to do nothing more than enter the tent and sit or lie down.

NPR: Anti-Doping Agency Reviews Low-Oxygen Tents