| 神秘内容 Loading...Underlying = inner (underlying adj.在下面的, 隐含的 ,implicit 如 underlying meaning) underpinning (基础, 支柱, 支撑 a support or foundation)
 Unqualified (不合格的,无限制的,绝对的) = complete
 utilitarian = functional (文中选) (utilitarian adj.功利的, 实利的, 功利主义的 n.功利论者 )
 unqualified =complete;
 utilitarian =functional
 universally--without exception
 unrestricted--unlimited
 undergone--experienced
 uniform
 vigorous = strong vexing = difficult (not sure) (vex: 使恼怒,使痛苦, puzzle, annoy)
 volatile--
 vast--immense
 vast--great
 vehicle--means
 variability==tendency to change  (来源:英语杂志 http://www.EnglishCN.com)
 withstand==persist >avoid/persist? 原文是:...brick withstood the weathering for a long time... withstand=resist
 wear--use
 whatever --in any case/ at any rate/at all event
 wary--cautious
 way station--stop
 ?= yet 选项还有however / in addition. yield--provide
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