坐在椅子上时，椅子对你施加反作用力。

When you sit on a chair, the chair exerts a reaction force on you.

“我不能坐在椅子上。” 那孩子抽泣着。

I can't sit on a chair,' sobbed the boy.

不管你是坐在椅子上还是盘腿坐在地板上，一定要保证抬头挺胸。

Whether you sit on a chair or cross-legged on the floor, make sure that your spine is upright with head up.

把他抬起来让他坐在椅子上？

Lift him up and sit him on a chair?

他舒服地坐在椅子上。

He sat comfortably on the chair.

我不想一辈子都坐在椅子上。

I do not want to spend all my life sitting in a chair.

他坐在椅子上。

He is sitting on a chair.

我坐在椅子上。

I sat on the chair.

坐在椅子上几个小时也会让你的背部疼痛。

Sitting on a chair for hours can make your back sore too.

丹麦人安静地坐在椅子上迎接新年。

People in Denmark sit on chairs quietly to welcome the new year.