求翻译：奥地利大公麦西米伦在1477年和法国玛利公主订亲时，曾差人给玛利公主带去一封信，信中说：“订亲之日，公主必须佩戴一枚镶有钻石的戒指。”从此，钻戒成为恋人们订情的信物，并一直流传至今。是什么意思？

Austrian Grand Duke Macey Mirren and France in 1477 when the pro-set Princess Mary, Princess Mary was brought to satisfactory letter said: "betrothal day, the princess must wear a set with diamonds the ring. "Since then, the diamond ring as a token of love lovers set, and has spread so far.

Austria Grand Duchy mirren McGinn and France in 1477 for pro-am, Mary's Princess sent to Princess Mary sent a letter saying: "A parent's Day, the princess must wear a gold ring encrusted with diamonds. From then on, diamond rings became a love letter from the set of properties, and has been handed d

Austrian grand duke's wheat sago roentgen when 1477 and French Princess Masurium Li engagement to marry, once the messenger took away for Princess Masurium Li a letter, in the letter said that,“Date of the engagement to marry, princess must wear one to beset with by the diamond the ring.From this ti

Austria Grand Duke West MAK Helen Mirren in 1477 and France when Mary Princess dingqin, had sent a letter to the Princess Mary to, said in the letter: "the day of dingqin, the Princess must wear a laced with diamond rings. "Since then, the diamond ring became lovers under pledge of love, and has bee

West Milun of Austrian archduke's wheat is when 1477 and French Princess Mary order kissing, once bad people took a letter for Princess Mary, said in the letter: "On day when order and kiss, the princess must wear a ring which studs with the diamond. "From then on, the diamond ring became keepsake t