🔑eightyBrE/ˈeɪti/NAmE/ˈeɪti/🔑number80八十nounthe eight·ies[pl.]numbers, yearsortemperaturesfrom80to89八十几;八十年代▸eight·ieth🔑BrE/ˈeɪtiəθ/NAmE/ˈeɪtiəθ/ordinal number, nounHELP There are examples of how to use ordinal numbers at the entry for fifth.序数词用法示例见 fifth 条。●inyoureightiesbetweentheagesof80and89 * 80 多岁