I know it must be boring to just see the ceiling all the time.
If you can lie on your stomach, you can see a different view. That's fun, isn't it?
ご質問ありがとうございます。
"I know it must be boring to just see the ceiling all the time."＝「いつも天井を見ているのはつまらないよね。」
"If you can lie on your stomach,"＝「うつ伏せになれると」
"you can see a different view."＝「違う景色が見えるね。」
"That's fun, isn't it?"＝「それは楽しいよね？」
ご参考に。
アメリカ合衆国 
