UL
abbr. Underwriters' Laboratories (美国)保险商实验所
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ula
(=gums)齿龈
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ulcer
n. 溃疡, 腐烂物
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ulcerate
v. 溃烂
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ulm
乌尔姆[德意志联邦共和国南部城市](或译乌耳姆)
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ULM
=Ultrasonic Light Modulator 超声光调制器
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Ulster
阿尔斯特(原为爱尔兰一地区, 今为北爱尔兰及爱尔兰共和国所分割)
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ulster
n. 一种长而宽松的外套
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ulterior
adj. 在那边的, 较远的, 将来的, 隐蔽的
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ultimate
adj. 最后的, 最终的, 根本的 n. 最终
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ultimately
adv. 最后, 终于, 根本, 基本上
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ultimatum
n. 最后通谍
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ultimo
adj. 上月的
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ultra
adj. 过分的, 极端的 n. 极端主义者, 过激论者, 急进论者
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ultramundane
adj. 世界之外的,太阳系之外的,超俗的
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ultrasonic
adj. 超音速的, 超声的 n. 超声波
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ultrasound
n. 超频率音响
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ultraviolet
adj. 紫外线的, 紫外的 n. 紫外线辐射
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ululate
vi. 嚎, 呜呜地叫, 啼, 哀鸣, 悲泣
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UM
=University Microfilms, Inc. 大学缩微胶卷出版公司[美]
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um
int. （表示迟疑）嗯
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uma
趾缘蜥
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UMA
n. 上端内存区
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umber
n. [化]棕土, 焦茶色 adj. 棕色的, 棕土的 vt. 涂红棕色于
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umbrage
n. 树荫, 不快
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umbrageous
adj. 多荫的
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umbrella
n. 伞, 雨伞, 庇护
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ump
n. 裁判员 vi. 当裁判
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UMP
=Uniformly Most Powerful 均匀最大功效的
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umpire
n. 仲裁人, 裁判员 v. 仲裁, 任裁判, 作裁判
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