'Thou art' is an archaic form of 'you are'.

thou art是you are的古体。

《牛津词典》

The only source of heat in this old house was an archaic coal stove.

这栋旧房子内惟一的供热来源是个古老的煤炉。

youdao

Unfortunately, some practitioners regard SCM as an archaic and unnecessarily controlling discipline.

不幸的是，一些实践者将SCM看作是一个陈旧的且不必要的控制规程。

youdao

It's a late Victorian image of an archaic singer rendered in the melodramatic manner of Pre-Raphaelite art and thoroughly removed from the aesthetic values of modernism, such as naturalism, formal clarity, emotional restraint and so on.

这是维多利亚时代晚期古代吟唱诗人的肖像,用戏剧化的前拉斐尔派,风格表现，完全摒弃了,现代主义的审美观，比如自然主义，形式明确，感情自制等等。

耶鲁公开课 - 现代诗歌课程节选

The recitation is an old, archaic, New England term.

背诵课是旧式的陈旧的新英格兰的用语。

麻省理工公开课 - 固态化学导论课程节选

It, like eBay, has turned an archaic paper-based industry into an efficient digital marketplace.

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There are long sequences of sports heroics within an archaic, though exciting brand of professional basketball.

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Boston's move was a by-product of an archaic system in place between the U.S. and Japanese leagues for the past decade.

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