A new analysis of British surnames reveals how names with rude overtones have seen the sharpest decline over the past 120 years as their owners have changed them to something more innocuous .

• 针对英国姓氏的一项新分析揭示，在过去120年中，随着其主人将姓氏改成较无伤大雅的姓，这些带有不雅色彩的姓氏是如何锐减的。