a friend let me drive his sports car and now i know why it's such a hot number .
一个朋友让我开了开他的跑车,现在我终于明白为什么跑车这么招人喜欢了。
a hot number might be construed to be an attractive woman (or maybe a fancy car or speedy computer) but in 1919 when the phrase first applied to a woman it was a term of disgust.
a hot number可以解读为迷人的女性(或者靓车、高速的计算机),但这个词组在1919年首次用在女性头上时,却有令人恶心的含义。