柯林斯詞典ninetieth /?na?nt??θ/ 1. ORD The ninetieth item in a series is the one that you count as number ninety. 第90 He celebrates his ninetieth birthday on Friday. 他周五慶祝他的90歲生日。 返回 ninetieth劍橋詞典90th written as a word 第九十(的) 返回 ninetieth