🔑sev·entyBrE/ˈsevnti/NAmE/ˈsevnti/🔑number70七十nounthe seventies[pl.]numbers, yearsortemperaturesfrom70to79七十几;七十年代▸seven·ti·eth🔑BrE/ˈsevntiəθ/NAmE/ˈsevntiəθ/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。●inyourˈseventiesbetweentheagesof70and79 * 70 多岁