Article in commemoration of the ninetieth birthday of Dr. Sun Yat-sen.
For the use of ninety and ninetieth see the examples at five and fifth
关於ninety和ninetieth的用法见five和fifth词条中的示例
And next month's sixteenth is the ninetieth birthday of the old emperor of the Oriental family. Please give him a treat anyway.
The present Protocol shall enter into force for the States whichhave ratified, accepted, a pproved or acceded to it on the ninetieth dayfollowing the date on which the following requirement s are fulfilled;