rack-and-pinion      i63〇 |

on the 'rack feeling extreme pressure, anxiety or pain 倍感压力；焦虑万分；痛苦不堪 ■ verb (also less frequent wrack) [VN] [often passive] to make sb suffer great physical or mental pain 使痛苦■不堪； 使受折磨：to k racked wit/i/by 深感内疚◊ Her /ace was racfced with pain•她满脸的痛苦。◊ Violent sobs racked her whole body.剧烈的抽泣使她全身抽搐。

◊ (8r£) a racking cough 鈿烈的咳嗽 IT»rai rack your 'brain(s) to think very hard or for a long time about sth 绞尽脑汁；冥思苦想：She racked her brains, trying to remember exactiy what she /iad said•她绞尽脑汁，想要 回忆起她到底说过些什么话。.rack up sth [espe­cially NAm£) to collect sth, such as profits or losses in a business, or points in a competition 累积；聚集（某 物 > ;累计（得分 > :TTie company racfced up $200 miZZion in iosses in two years.公司齒年内损失累计达2亿 元。◊ In ten years of boxing he racked up a record 176 wins.在十年的拳击生涯中，他创纪录地累计获胜176次。

racks架子

,rack-and-'pinion adj. [only before noun] using a piece of machinery in which a moving cog (= wheel with teeth around the edge) fits into a bar with teeth 齿条齿

轮装置的；齿条齿轮式的

racket /'raekit/ noun 1 {sing.] {informal) a loud un­pleasant noise 喧哗； 吵闹 Hn din： Stop making that terriWe racfcet/ 另ij 吵啦！ ’ 2 [C] (//?/om7fl/) a dishonest or illegal way of getting money 诈骗；勒索：a protection/ extortion/drugs，etc.racfcet收取保护秦、敲诈、販毒等 勾当 3 (also rac.quet) [C] a piece of sports equipment used for hitting the ball, etc. in the games of tennis, squash or badminton. It has an oval frame, with strings stretched across and down it.(网球、羽毛球等 的）球拍一compare bat rt.{l) 4 rackets, racquets [U] a game for two or four people, similar to squash, played with rackets and a small hard ball in a court with four walls 墙网球

1 racket abuse (also 'racquet abuse) noun [U] the offence in tennis of throwing a racket or not using it correctly, considered to be unacceptable behaviour (网球犯规行为）摔球拍，球拍使用有误 rack-et-eer /.raeka'tia^); NAmE -'tir/ noun {disapproving) a person who makes money through dishonest or il- legal activities诈骗者；非法获取钱财者► racketeer­ing /7〇w/7 [U]

1 rack rate noun {especially NAm£) the standard price of a hotel room (宾馆的丨标准房租，原定房租 ra-con-teur /,raBkDn't3：(r); NAmE -ka:n-/ noun a person who is good at telling stories in an interesting and amusing way善于讲故事的人

racoon = raccoon racquet = racket(3) racquet abuse = racket abuse rac-quet-ball /'raekitboil/ noun [U] a game played espe­cially in the US by two or four players on a court with four walls, using rackets and a small hollow rubber ball美式墙网球（二人或四人对垒，场地四面有墙，使用 球拍和小空心橡皮球>

racy /'reisi/ adj. (raci-er, raci-est) having a style that is exciting and amusing, sometimes in a way that is connected with sex (风格）活泼的；不雅的：a racy novd带荤的小说 rad /raed/ adj., noun

m adj. {old-fashioned, slang, especially NAmE) very good #

常棒的；精彩的

■                  flown (ph>/5/cs 物）a unit for measuring the effect of radi­ation 拉德 （辐射吸收剂量单位 ）

radar /'reida:(r)/ noun [U] a system that uses radio waves to find the position and movement of objects, for example planes and ships, when they cannot be seen 雷达：rhey 〖ocated the ship by radar•他们通过雷达确 定了船只的位置。◊ a radar screen雷达显示屏一com­pare sonar ffiTJl on/off the 'radar screen {NAmE) used to say that people's attention is on or not on sth 受 /不受人关注：77ie issue 〇/ terrorism is bacfc on the radar screen.恐怖主义问题重新受人关注。一more at

BUBBLE V.

'radar trap noun {Br£) = speed trap rad-dled /'raedld/ adj. (6r£) (of a person, their face, etc. 人、面容等）looking very tired疲劳的；疲倦的HEI WORN

ra-dial /'reidial/ adj., noun

■                  having a pattern of lines, etc. that go out from a central point towards the edge of a circle 放射状的；辖 射状的：the radial pattern of public transport facilities 呈辐射状分布的公共交通设施► ra*dra丨/-iali/ fldv.

a noun (BrE also .radial 'tyre) (NAmE also .radial 'tire) a car tyre with strong parts inside that point away from the outside part and make the tyre stronger and safer 辐f式轮胎；子午线轮胎

ra-dian /'reidian/ noun (geometry /LM) a unit used to measure an angle, equal to the angle at the centre of a circle whose arc is the same length as the circle’s RADIUS弧度

ra-di«ance /'reidians/ noun [U] 1 a special bright quality that shows in sb’s face, for example because they are very happy or healthy 容光焕发；纟i光满面 2 warm light shining from sth (散发出来如）光辉 ra*di-ant /'reidiant/ adj. 1 ~ (with sth) showing great happiness, love or health喜气洋洋的；容光焕发的；面 色红润的：a radiant smiie喜气洋洋的微笑◊ rhe bri'de Zoofced radiant•新娘看上去满面—风。◊ S/ie vrns radiant with hedth•她#裇健康，容光焕发。2 giving a warm bright light 灿烂的；光芒四射的：TTie sim was radfcmt fn a dear Wue s’湛蓝的天空阳光灿烂。3 [only before noun] (technical sent out in rays from a central point 备射的；放射的：the radiant heat/energy of the sun 太阳 A辐射热 / 辖射能► ra’dhantly fldv.: radiantly happy喜气洋洋◊ Jfe smifed radiantZy. i也喜笑颜开。 ra-di-ate /'reidieit/ verb 1 if a person radiates a particular quality or emotion, or if it radiates from them, people can see it very clearly (使品质或情感） 显出，流倉：[VN] He radiated self-confidence and opti- mism•也得自信乐观。[also V] 2 if sth radiates heat, light or energy or heat, etc. radiates from it, the heat is sent out in all directions (使热、光、能量）辐射，放 射，发散 give (sth) off ： [V] Heat radiates from the stove.炉子的热向办散发。[also VN] 3 [V     ]

(of lines, etc.直线等)to spread out in all directions from a central point _中心辖射出；向周围伸展：FiVe roads radiate _/h>m the square•五条道路由卜运.向外延 f申。◊ 77ie pai/i started in my stomach and radfated aZZ over my body.我起初只是肚子疼，后来全身都疼。 ra-di-ation /.reidi'eijn/ noun 1 [u, C] powerful and very dangerous rays that are sent out from radioactive substances 辐射；放射线：high levels/doses of radi- ation that damage ceHs 损—细胞的高强度辖射 Ofhe h_nfc between exposure to radiation and childhood cancer MM