seventh/ˈsevnθ; `sɛvənθ/ pron, det 7th; next after sixth 第7, 第七（个）. n one of seven equal parts of sth 七分之一. seventhly adv. For the uses of seven and seventh see the examples at five and fifth. 关於 seven 和 seventh 的用法见 five 和 fifth 词条中的示例.
牛津英汉双解词典