upright
a.直立的;正直的
ad.挺直著，竖立著
Katie was still awake, sitting bolt upright (=sitting with her back very straight) staring at the television.凯蒂还没睡着，笔挺地坐在那里盯着电视看。
upset
vt.心烦意乱;搅乱 n.不安(适)
a.心烦的
She was really upset about the way her father treated her.父亲那样对她，她感到十分难受。
up to date现代化的，切合目前情况的
urban
a.城市的
unemployment in urban areas城市地区的失业状况
veil
n.面纱(罩);遮盖物
vt.遮盖，掩饰
She lifted her veil with both hands.她用双手揭开面纱。
velocity
n.速度，速率
the velocity of light光速
