A sleepover is a night at someone else’s house that is meant to be fun, almost always for children or teenagers: you take a bag, you stay until morning, and the point is games, films, talking in the dark, maybe a pillow fight.

A sleepover過夜 is a night at someone else's house是在別人家過的一晚 that is meant to be fun通常是為了好玩 almost always for children or teenagers幾乎都是給小孩或青少年的: you take a bag你帶著包包, you stay until morning待到早上, and the point is而重點是 games, films, talking in the dark, maybe a pillow fight玩遊戲、看電影、在黑暗中聊天，或許還打個枕頭仗。

Though actually, just sleeping at another house is not enough to make it a sleepover. If you miss the last train and a friend lets you use the sofa, that is staying over, not a sleepover.

Though actually不過, just sleeping at another house光是在別人家睡覺 is not enough to make it a sleepover還不足以構成一次過夜. If you miss the last train如果你錯過最後一班火車 and a friend lets you use the sofa朋友讓你睡沙發, that is staying over那叫借住一晚, not a sleepover而不是過夜。

Grown-ups almost never call their own night at a friend’s a sleepover; they say they are staying over or spending the night.

Grown-ups大人 almost never call幾乎不會把 their own night at a friend's自己在朋友家過的一晚 a sleepover叫做過夜; they say他們會說 they are staying over or spending the night借住一晚或過一夜。

The word is very at home in American English, and British speakers use it too now, though some older British people grew up with the verb (“sleep over at…”) more than the noun. You will meet both: “a sleepover on Friday” and “Can I sleep over at hers?” The noun is what goes on invitations.

The word這個字 is very at home in American English在美式英語裡非常自然, and British speakers use it too now現在英式的人也會用, though some older British people grew up with不過一些年紀較大的英國人比較習慣用 the verb ("sleep over at…")動詞（'sleep over at…'） more than the noun而不是名詞. You will meet both你會兩種都遇到: "a sleepover on Friday" and "Can I sleep over at hers?"'a sleepover on Friday'和'Can I sleep over at hers?' The noun名詞 is what goes on invitations是邀請卡上用的。