A flashing set of healthy and clean, regular 'pearly whites' was a rare sight in Victorian society, the preserve of the super-rich (and even then, dental hygiene was not guaranteed).
在维多利亚时代社会中，一口洁白、干净、整齐的牙齿是罕见的景象，只有超级富有的人（即使如此，口腔卫生也并不一定有保障）才拥有。
Their unhealthy dental condition.
他们的牙齿状况不健康。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。