🔑fiftyBrE/ˈfɪfti/NAmE/ˈfɪfti/🔑number50五十nounthe fifties[pl.]numbers, yearsortemperaturesfrom50to59五十几;五十年代◆Shewasborninthefifties. 她是五十年代出生的。▸fif·ti·eth🔑BrE/ˈfɪftiəθ/NAmE/ˈfɪftiəθ/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。●inyourˈfiftiesbetweentheagesof50and59 * 50 多岁◆Heretiredinhisfifties. 他在五十多岁时退休了。