to act together for a purpose 联合行动.一致行动 united adj. 1 joined in a state of love, agreement, etc. 团结的.和睦的 2 with everyone concerned having the same aim 一致的.统一的 3 (cap. In names) (作名称时 大写) joined in a political organization结合于一个政治组织内的 universe n. (often cap.) all space and the matter which exists in it 宇宙,世界,天地万物 unknown n.& adj. whose name, value, or origin is not known(人或事物的名称.价值或起源)未知的.未被发现的.不了解的,未知的人 university n. 大学 unless conj. if not; except if 如果不,除非 unpleasant adj. not pleasant; causing dislike; not enjoyable; unkind 使人不愉快的,讨厌的,不合意的,不和善的 -unpleasantly adv.. -unpleasantness n. unreserved adj. without limits or reservations 无限制的.无保留的,充分的,坦白的 unrest n. 不安,骚动 unsold adj. 未销售的 unsuccessful adj. 不成功的,失败的 until also till- prep.& conj. up to the time when, up to as late as 直到-为止;在-以前 not-until- 直到．．．．．．之前,不到．．．．．．(不) unusual adj. not usual; rare; not common; interesting because different from others 不平常的,罕见的,与众不同的,独特的 up adv. 1 from below towards a higher place; away from the floor, the ground, or the bottom 向上,向更高处,离开楼面 2 in a high place 在上,在高处 3 into an upright or raised position 趋向直立或竖起姿势 adj. 1 directed or going up 向上的 2 being repaired 正在修理的 prep. 1 to or in a higher place in; upwards by way of 向．．．面; ;在．．．上面,由．．．向 上 2 along; to or at the far end of 沿着,向．．．的远端,在．．．的远端 3 against the direction of(the current of a river) 逆着的方向 4 up and down: a. higher and lower on 沿．．．上 b. backwards and forwards along 沿．．．来 回 upon prep. 在．．．．．．上面 upstairs adv.& adj. at, to, or on the upper floor(s) of a building 在楼上 upwards also upward AmE(亦作upward <美>)- adv. 1 going up 向上.上升 2 with a particular side facing up 朝上地 uranium n. a heavy white metal that is a simple substance and gives out radioactivity 铀 us pron. (object form of WE) use n. 1 the act of using or state of being used 用,使用,应用,利用 2 the ability or right to use something 运用能力,使用权 3 the purpose or reason for using something 使用目的,用途,用处 4 the usefulness or advantage given by something 效用,好处,价值 use v. used, using 1 to employ for a purpose; put to use 用,使用,利用,应 用 2to finish; consume 消费,消耗,耗尽 3 derog with consideration only for one’s own advantage,自私地对待 v. used, BrE negative short forms usedn’t, usen’t (<英>否定缩略形式 usedn’t, usen’t ) (used in the past tense only, to show that something happened always or regularly)(仅用于过去式中.表示某事过去经常或有规律地发生) make use of 利用,借用 use one’s head 动脑筋,仔细考虑 USAGE 1 Used to and would are both used of things that happened always or regularly in the past, but would is not used at the beginning of a story用法: Used to和would 都用以表 示事物过去经常或有规律地发生.但在开始叙述时不用would: We used to swim ev.ery day When we were children. We would run down to the lake and jump in- 我们小时候天天去游泳.我们常跑到湖边.跳进水里．．． 2 The usual question form of used to is Did(n’t) sl: use/used to, but Used/Usen’t she to are also possible. used to 的常用疑问形式是 Did(n’t)she use/used to, 但也可用Used/Usen’t she to. in the NEGATIVE, She used not to/usen’t to and She didn’t used/use to are all possible, but She never used to, which expresses the same idea, is probably more common. 在否定句中.She used not to/usen’t to 和She didn’t used/use to 两者都可用.但意思相同的She never used to 也许用得更为普遍 used 动词use的过去式 used to 过去常常 be used to 习惯于 useful adj. 1 effective in use 有用的,有效的,有益的 2 helpful 有帮助的 useless adj. not of any use 无用的,无效的,无益的 –uselessly adv. –uselessness n. usual adj. happening most often; customary 通常的.平常的.惯常的 as usual as generally has happened before 象往常一样,照例 usually adv. often; generally 通常.经常.惯常 vacation [v 'kei n] n. A time of rest, amusement, and recreation away from one's job or school Am. E 假期.休假 syn. holiday Am. E 可指传统节日.也可泛指休息日.常用复数表示长时间休息 leave 因事.因病请假 valley ['v li] n. The land lying between two lines of hills or mountains 山谷.河谷 various [v' ri s] adj. different; several, number of 各种各样的.不一样的 variously, variety, vary ant. different 不同的.不一样的 valuable ['v ljuble] adj. 1. worth a lot of money 贵重的.值钱的 【查看更多】
