9th 第九 Today is the ninth (of May). 今天是五月九日。 the ninth century BC 公元前九世纪 It's her ninth birthday. 这是她9岁生日 My office is on the ninth floor. 我的办公室在九楼。 It's the ninth time that I've been to America. 这是我第九次去美国。 The artist had just sold another painting, her ninth. 这位艺术家刚刚卖了另一幅画,她的第九幅。 the world’s ninth-largest oil exporter 世界第九大石油出口国 He finished ninth in the race. 他在比赛中得了第九名。 Christian IX (= Christian the Ninth), King of Denmark 丹麦国王克里斯蒂安九世