sixtieth
/ˈsɪkstiəθ/numeral [序数词] 第六十;六十分之一
He died in his sixtieth year. 他是六十岁时去世的。
adjective [原级] 第六十的;六十分之一的
Jenny, tomorrow is your mother's sixtieth birthday. 珍妮,明天是你妈妈的60岁生日。
noun [抽象名词] 第六十;六十分之一
He will celebrate his retirement and officially retire at his sixtieth birthday celebration. 他将在六十岁生日庆祝活动上庆祝退休并正式退休。