Describes a film that people under 18 are not allowed to see, because it has sex or violence in it. It came from the old rating systems in Britain and America where a film was given the letter X, and it works as an adjective, usually before a noun: an X-rated film, an X-rated video.

Describes a film用來形容一部 that people under 18 are not allowed to see未滿18歲不准看的電影，because it has sex or violence in it因為裡面有性或暴力內容。It came from the old rating systems in Britain and America它源自英美舊有的分級制度，where a film was given the letter X當時電影會被評為 X 級，and it works as an adjective它是形容詞用法，usually before a noun通常放在名詞前面：an X-rated film, an X-rated video「an X-rated film」「an X-rated video」。

In everyday use, though, X-rated has drifted, and this is the part worth knowing. Because the American X rating was quickly taken over by the pornography business — hence XXX on shop signs — most English speakers now hear X-rated as meaning pornographic, not merely adult.

In everyday use, though不過在日常使用裡， X-rated has drifted這個詞的意思已經偏移了，and this is the part worth knowing這一點值得知道。Because the American X rating was quickly taken over by the pornography business因為美國的 X 級評等很快被色情產業拿去用——hence XXX on shop signs所以店家招牌上才會出現 XXX——most English speakers now hear X-rated as meaning pornographic, not merely adult現在大多數英語使用者聽到 X-rated 會理解成「色情」，而不只是「限制級」。

Both official systems have moved on (Britain uses 18, America uses NC-17), so the word survives less as a real rating and more as a way of saying "very rude indeed." You will hear it stretched, often half-joking, to all sorts of things that have nothing to do with film: an X-rated joke, an X-rated text message, an X-rated argument the neighbours could hear through the wall. It is casual, spoken English, and slightly dated — a word your teacher's generation reaches for more readily than a teenager would.

Both official systems have moved on兩邊的正式分級制度都已經改了 (Britain uses 18, America uses NC-17)（英國用18級，美國用 NC-17），so the word survives less as a real rating and more as a way of saying "very rude indeed."所以這個詞現在比較不是真的分級，而是一種說「真的很超過」的方式。You will hear it stretched你會聽到它被延伸使用，often half-joking常常帶點開玩笑，to all sorts of things that have nothing to do with film用在各種跟電影完全無關的事情上：an X-rated joke, an X-rated text message, an X-rated argument the neighbours could hear through the wall「X-rated joke（限制級笑話）」「X-rated text message（限制級簡訊）」「鄰居隔牆都聽得到的X-rated argument（限制級的爭吵）」。It is casual, spoken English它是口語、隨性的用法，and slightly dated而且有點過時——a word your teacher's generation reaches for more readily than a teenager would是你老師那一輩比青少年更常用的詞。