numeral 下载 🔗分享 十九 The cardinal number occurring after eighteen and before twenty, represented in Roman numerals as XIX and in Arabic numerals as 19. It is the last/largest of the "teens". Examples : "My little sister turned nineteen yesterday. " 我 妹妹 昨天 满 十九 岁 了。 number math 与AI对话词汇游戏阅读练习