| 释义 |
back 1 AHD[băk] D.J.[bæk]K.K.[bæk]n.（名词）- The posterior portion of the trunk of the human body between the neck and the pelvis; the dorsum.背部：人体躯干的后部，在脖子和骨盆之间；背部
- The analogous dorsal region in other animals.动物的背部：其它动物相似的背部部位
- The backbone or spine.脊骨或脊柱
- The part or area farthest from the front.后部：离前面最远的部分或地区
- The part opposite to or behind that adapted for view or use:背面，反面：与看见或使用的部分相反或在其后面的部分：the back of the hand; wrote on the back of the photograph.手背；写在照片背面
- The reverse side, as of a coin.反面：反面，如硬币的反面
- A part that supports or strengthens from the rear:靠背：从后部支持或加强的部分：the back of a couch.睡椅的靠背
- The part of a book where the pages are stitched or glued together into the binding.书脊：书页被装订或粘在一起成册的滚边部分
- The binding itself.装订本身
- Sports 【体育运动】
- A player who takes a position behind the front line of other players in certain games, such as football.后卫：在某种比赛项目中，如足球，处在其它运动员前线位置之后的运动员
- This playing position.后卫位置
v.（动词）backed, back.ing, backs v.tr.（及物动词）- To cause to move backward or in a reverse direction:使倒退：引起向后或相反方向移动：Back the car up ten feet and then make the turn.把车向后倒10英尺然后转弯
- To furnish or strengthen with a back or backing.背靠，加固：用后背或支持物装备或加强
- To provide with financial or spiritual help; support or sustain:支持，后援：提供财政的或精神上的帮助；支持或维持：backed our candidate with a $1,000-a-plate dinner.See Synonyms at support 以一人1000美元的晚餐为我们的候选人打气 参见 support
- To bet or wager on.打赌：打赌或用…赌博
- To adduce evidence in support of; substantiate:引证，证明：提出证据支持；证明，证实：backed the argument with facts.用事实证明论点
- To form the back or background of:形成…的背部或背景：Snowcapped mountains back the village.白雪皑皑的山峦形成了村庄的背景
v.intr.（不及物动词）- To move backward.倒退：向后移动
- To shift to a counterclockwise direction. Used of the wind.逆时针转向：转变为逆时针方向。用于指风
adj.（形容词）- Located or placed in the rear:后部的：位于或安置在后面的：Deliveries should be made at the back entrance.交货应在后面的入口处
- Distant from a center of activity; remote.偏远的：远离活动中心的；偏远的
- Of a past date; not current:过时的，不流行的：属于过去的日子的；不是现时的：a back issue of a periodical.过期的期刊
- Being owed or due from an earlier time; in arrears:积欠的：较早时期应拥有或到期的；拖欠的：back pay.欠薪
- Being in a backward direction.向后的：处于向后的方向的
- Linguistics Pronounced with the back of the tongue, asoo in cool. Used of vowels. 【语言学】 舌根的：用舌根发音的，如oo 在 cool 一词中的发音。用于元音字母
adv.（副词）- At, to, or toward the rear or back; backward.在后地，向后地：在、到或向着后面或后部地；向后地，落后地
- In, to, or toward a former location:回到原处：在、到或向着从前的位置：went back for the class reunion.参加同班同学会
- In, to, or toward a former condition.回到原先状态：在、到或向着从前的状态地
- In, to, or toward a past time.从前地：在、到到向着过去的年代地
- In reserve or concealment.储存地或隐蔽地
- In check or under restraint:阻挡地：处于被节制或被隐瞒的状态：Barriers held the crowd back.栅栏将群众挡住了
- In reply or return.回答或归还
back away - To withdraw from a position; retreat.撤退：从某个位置撤离；撤退
back down - To withdraw from a position, opinion, or commitment.让步，放弃：从某个位置、观点或义务中撤出
back off - To retreat or draw away.撤回或离开
back out - To withdraw from (an enterprise or a plan) before completion.中途退出：在完成之前从（某项计划或事业）中退出
- To fail to keep a commitment or promise.失言：没有履行义务或诺言
back up - To cause to accumulate or undergo accumulation:使聚集：引起堆积或经过积累：The accident backed the traffic up for blocks. Traffic backed up in the tunnel.事故引起了交通阻塞。在地下道中引起了交通阻塞
- Computer Science To make a backup of (a program or file).【计算机科学】 备份：为（程序或文件）备份
back and fill - Nautical To maneuver a vessel in a narrow channel by adjusting the sails so as to let the wind in and out of them in alteration.【航海】 调整航向：在狭窄的水道中操纵船，通过调整风帆以便使风帆间进出的风向有所改变
- To vacillate in one's actions or decisions.举棋不定：在行动与决定之间犹豫不决
- Middle English bak 中古英语 bak
- from Old English bæc 源自 古英语 bæc
backʹless adj.（形容词）- The expressionback of is an informal variant of in back of and is best avoided in writing: There was a small stable in back of (not simply back of ) the house. 表达方式back of 是 in back of 的一种不正式的变形方式， 最好避免在书面语中运用，如： There was a small stable in back of（不要简单地说成 back of ） the house （房后有一个小马厩）
back 2 AHD[băk] D.J.[bæk]K.K.[bæk]n.（名词）- A shallow vat or tub used chiefly by brewers.大浅桶：主要供酿酒商用的一种浅的盆或缸
- Dutch bak 荷兰语 bak
- from French bac 源自 法语 bac
- from Old French [boat] 源自 古法语 [船]
- from Vulgar Latin *baccus [vessel] 源自 俗拉丁语 *baccus [船，容器]
- [probably of Celtic origin] [可能源于凯尔特语的]
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