A blue-blooded person belongs to a royal or noble family — born into titles, palaces, old names. It is a slightly old-fashioned, story-book way of saying they did not climb there; they arrived by birth.

A blue-blooded person一個blue-blooded的人 belongs to a royal or noble family出身於王室或貴族家庭—— born into titles, palaces, old names生下來就有頭銜、住在宮殿裡、有古老的姓氏。 It is a slightly old-fashioned, story-book way of saying這是一種有點老派、像故事書一樣的說法， they did not climb there; they arrived by birth說他們不是靠自己爬上去的，而是生下來就在那裡了。

Newspapers still use it about princes and long-rich families. It comes from the noun blue blood, meaning that kind of family background; add -ed and you have the adjective.

Newspapers still use it about princes and long-rich families報紙現在還是會用這個字來形容王子和世代富有的家族。 It comes from the noun blue blood它是從名詞blue blood（藍血）來的， meaning that kind of family background指的就是那種家世背景； add -ed and you have the adjective加上-ed就變成形容詞。

Though actually, nobody's blood is blue. People used to say the veins of nobles looked blue because they did not work in the sun, and the phrase stuck as a picture, not a medical fact.

Though actually不過其實， nobody's blood is blue沒有人的血是藍色的。 People used to say the veins of nobles looked blue以前的人說貴族的血管看起來是藍色的， because they did not work in the sun因為他們不用在太陽下工作， and the phrase stuck as a picture, not a medical fact這個說法就這樣留下來，變成一個畫面，而不是醫學事實。

You will also hear it stretched, a little jokingly, for anyone who seems born to money and manners.

You will also hear it stretched, a little jokingly你也會聽到有人把它用得更寬鬆一點、帶點玩笑意味， for anyone who seems born to money and manners去形容任何看起來生來就有錢又有教養的人。