uitra读：英音[ˈʌltrə]美音[ˈʌltrə]。
释义
n.（尤指政治上的）过激分子，极端主义者；超级马拉松（ultramarathon的简称）。adj.极端的，偏激的。adv.很，非常。【名】；（Ultra）（俄）乌尔特拉（人名）。
例句
1、Not all the glass technology that touches our lives is ultra-modern.并非所有影响我们生活的玻璃技术都是超现代的。
2、The new ultra-low emission zone (Ulez) is likely to be a big issue in next year's mayoral election.“超低排放新区（Ulez）”很可能是明年伦敦市长选举的重大议题。
3、Our cheap, ultra-reliable wired networks made credit-card authentication over the phone frictionless.我们实惠的、非常可靠的有线网络使通过电话进行信用卡认证变得轻而易举。
4、The ban on ultra-thin models seems to go beyond protecting models from starving themselves to death—as some have done.对超瘦模特的禁令似乎不仅仅是在防止模特挨饿致死正如曾有人这么做过的。
5、Good went on to suggest that "the first ultra-intelligent machine" could be "the last invention that man need to ever make."古德还表示“第一台超智能机器”可能是“人类需要创造的最后一项发明”。
6、While successful people are driven to achieve their goals, the ultra successful have even greater ambition.虽然成功人士是被驱使着实现自己的目标，但那些超级成功人士则有更大的野心。