傲慢与偏见中,为什么Bennet太太说“what a fine thing for our daughters."

《傲慢与偏见》，原文句子是：“Oh!Single,mydear,tobesure!Asinglemanoflargefortune;fourorfivethousandayear.Whatafinethingforourgirls!”译文：“噢！是个单身汉，亲爱的，确确实实是个单身汉！一个有钱的单身汉；每年有四五千镑的收入。真是女儿们的福气！”Mrs.Bennetsays"whatafinethingforourdaughters"becauseBingleyissingleandrichandasinglemaninpossessionofagoodfortunemustbeinwantofawife.因为彬格莱单身有钱，而有钱的单身汉总要娶位太太。