I got one ninetieth of the total bonus for the project.

我得到了项目总奖金的九十分之一。

My son ranked ninetieth in his grade in the exam.

我儿子在这场考试中全年级排名第九十。

China is the ninetieth country to appear.

中国是第九十个出场的国家。

He celebrates his ninetieth birthday on Friday.

他周五庆祝他的90岁生日。

She was ninetieth in the competition.

她在那场比赛中排名第九十。

This is the ninetieth edition of this book.

这是本书的第九十版。

She is like the ninetieth person on the list.

她好像是名单上的第九十位。

The ninetieth customer will win a surprise gift.

第九十名顾客将会赢得一份惊喜大礼。