If you have a nosebleed, blood starts coming out of your nose. It may follow a knock, very dry air, or no clear reason at all, and it often looks worse than it feels.

If you have a nosebleed如果你nosebleed, blood starts coming out of your nose就是血開始從鼻子流出來. It may follow a knock, very dry air, or no clear reason at all可能是撞到、空氣很乾，或根本沒有明顯原因, and it often looks worse than it feels而且看起來往往比實際感覺還嚴重.

This is the everyday word; a doctor may use a Latin name, but at home everyone says nosebleed. You have a nosebleed, or your nose is bleeding — both are natural.

This is the everyday word這是日常用語; a doctor may use a Latin name醫生可能會用拉丁文名稱, but at home everyone says nosebleed但在家裡大家都說nosebleed. You have a nosebleed你可以說you have a nosebleed, or your nose is bleeding或your nose is bleeding — both are natural兩種說法都很自然.

People also stretch the word in informal American English: “nosebleed seats” are the cheapest seats high up in a stadium, so high (the joke goes) they could give you a nosebleed. That is the same word used for a laugh, not a second dictionary item. The core meaning is blood from the nose.

People also stretch the word大家也會把這個字延伸使用 in informal American English在美式口語裡: "nosebleed seats"「nosebleed seats」 are the cheapest seats high up in a stadium是體育場裡最高、最便宜的座位, so high (the joke goes) they could give you a nosebleed開玩笑說高到會讓你流鼻血. That is the same word used for a laugh那是同一個字被拿來開玩笑用, not a second dictionary item不是另一個獨立的字義. The core meaning is blood from the nose核心的意思就是鼻子流血.