“A chair is at the desk.

“A chair is at the desk.
“A chair is at the desk.

“A chair is at the desk.
椅子在桌子旁.

椅子在桌子旁边

椅子是在书桌上

椅子放在桌子上

一把椅子在课桌边/靠着课桌边

椅子在桌子旁，希望采纳