adj.古旧的，陈旧的，古代的，古体的，已不通用的，早已过时的，早期的

The village elder spoke in an archaic dialect, making it difficult for the younger generation to understand.
村里的长者用一种古旧的语言说话，使得年轻一代难以理解。
His knowledge of history was rooted in the most archaic sources, which sometimes led to misconceptions.
他对历史的理解源自最古老的资料，这有时会导致误解。
The castle's architecture displayed an archaic blend of Gothic and Roman styles.
这座城堡的建筑风格融合了哥特式和罗马式的古老元素。
She found an old, leather-bound book with an archaic script, dating back to the 16th century.
她发现了一本装订着旧皮革的书，上面的字体古老，可以追溯到16世纪。
The professor's lectures on linguistics were peppered with archaic words that few students could decipher.
教授的语言学讲座中充满了鲜为人知的古词，学生们很难理解。
The museum's collection of antique artifacts felt like stepping into an archaic time.
博物馆的古董收藏让人仿佛穿越到了久远的时代。
In their daily conversations, they still used a few archaic expressions that no longer existed in modern English.
在日常对话中，他们还使用了一些早已在现代英语中消失的古语。
The family heirloom, a silver chalice, was an exquisite piece of archaic craftsmanship.
那个家族传家宝——银质圣杯，是一件精美的古董艺术品。
The professor's research delved deep into the archaic beliefs of ancient civilizations.
教授的研究深入探讨了古代文明的古老信仰。
The phrase 'by and by' is considered quite archaic and not commonly used in modern speech."
"by and by"这个词组被认为是相当过时的，在现代语言中不常用。