WC means toilet — the room, and sometimes the toilet itself. It comes from 'water closet', the old name for a small room with a flushing toilet.

WC means toiletWC 的意思是廁所 — the room指房間，and sometimes the toilet itself有時候也指馬桶本身。It comes from 'water closet'它來自 'water closet'（水櫃），the old name for a small room with a flushing toilet也就是有沖水馬桶的小房間的舊稱。

Almost nobody says 'water closet' out loud any more; the letters live on mainly on signs, especially in public buildings, train stations, airports, hotels and restaurants, and especially in Europe. Because it is short and neutral, it works well as an international sign — many non-English speakers recognise WC even if they do not read English.

Almost nobody says 'water closet' out loud any more現在幾乎沒有人會把 'water closet' 說出口了；the letters live on mainly on signs這幾個字母主要留在標示牌上，especially in public buildings, train stations, airports, hotels and restaurants尤其是公共建築、火車站、機場、飯店和餐廳，and especially in Europe而且在歐洲特別常見。Because it is short and neutral因為它又短又中性，it works well as an international sign很適合當國際通用的標示 — many non-English speakers recognise WC很多不會英文的人都認得 WC even if they do not read English即使他們看不懂英文。

But in speech it sounds old-fashioned or foreign in Britain, America, Canada and Australia. If you ask an American 'Where is the WC?' they will understand you, but it will sound odd — they say 'restroom' or 'bathroom'. British speakers say 'the toilet' or 'the loo'.

But in speech但在口語裡 it sounds old-fashioned or foreign它聽起來很老派或很外國腔 in Britain, America, Canada and Australia在英國、美國、加拿大和澳洲都是這樣。If you ask an American 'Where is the WC?'如果你問美國人「Where is the WC?」 they will understand you他們聽得懂你的意思，but it will sound odd但聽起來會怪怪的 — they say 'restroom' or 'bathroom'他們會說 'restroom' 或 'bathroom'。British speakers say 'the toilet' or 'the loo'英國人會說 'the toilet' 或 'the loo'。

So: read it on signs, but choose a different word when you speak.

So所以：read it on signs看到標示牌就照著讀，but choose a different word when you speak但開口說話時要換一個字。

One more use: house adverts and floor plans use WC for a small room with only a toilet, as in 'a downstairs WC'. Said letter by letter: W-C.

One more use還有一個用法：house adverts and floor plans use WC for a small room with only a toilet房屋廣告和平面圖會用 WC 指只有馬桶的小房間，as in 'a downstairs WC'像「a downstairs WC」（樓下的小廁所）。Said letter by letter一個字母一個字母唸：W-C就是 W-C。