Arbor Day /'aiba dei; NAmE 'arrbar/ noun a day when people in the US, Australia, New Zealand and some other countries plant trees (美国、澳大利亚、新西义等

国的）植树节

arboreal 7a:'bo:rial; air’b-/ flc/y.        术语)

relating to trees; living in trees 树‘未的；參丨栖的 arboretum /.aiba'riitam; NAmE ,a:rb-/ noun {pi. ar-bor-etums or ar-bor-eta /-ta/) a garden where many different types of tree are grown, for people to look at or for scientific study (供观赏、科研的）树木园，植 物园

ar-bori-cul>ture /'aiberikAlt^r); NAmE 'a:rb-/ noun [U] the study or practice of growing trees and shrubs 树木 栽培研究；.树木栽培►a.rbori’cuhtural /^bari'kAltJaral; NAmE ,a:rb-/ adj. ： an arboricu/turaZ speciafet 树木叔培 arbori-cul tur-ist noun

Ar-borio /a:'bo:riau; NAmE arr'boiriou/ noun [U] a type of Italian rice with a short grain 意大利圆粒米 arbour (6rf) (NAmE arbor) /'a:ba(r); NAmE 'a:rb-/ noun a shelter in a garden/yard for people to sit under, made by growing climbing plants over a frame (花闶、院了• 中由藤蔓在架子土攀缘而成的）棚架，凉棚 arbu-tus /ar'bjuites; NAmE a:r'b-/ noun a type of ever­green tree with broad leaves, pink or white flowers and BERRIES like STRAWBERRIES浆果鹃属桢物（阔叶常 绿，花白色或粉红色，结浆果广" arc/ark; NAmE a:rk/ noun, verb

m noun 1 (geometry M) part of a circle or a curved line 弧一picture o circle 2 a curved .shape 弧形：the .arc 〇/a rainbow 彩虹的弧形◊ TTie beach swept around in an arc.海滩呈弧形伸展开来。3 (fed?n/cfl/朵语)an electric current passing across a space between two terminals 电弧，—see also arc lamp

mverb (arc-ing /'aikii]； NAmE 'a:rk-/, arced, arced /a:kt; /、Mwf a:rkt/) [V] (tor/j/i/co/ 术请）1 to move in the shape of an arc 作虹形运动 2 to form an electric arc 形成电i ar-cade /a:'keid; NAmE air'k-/ noun 1 a covered passage with arches along the side of a row of buildings (usually a row of shops/stores)拱廊，拱廊通道（常指 if商店门前的带顶走遺a covered passage between streets，with shops/stores on either side 拱廊商店1 街 (设于两街之向，两侧均有侖店）s 3 (also 'shopping arcade) (both BrB) a large building with a number of shops/stores in it商场；购物中心；商业中心 —compare shopping mall 4 = amusement arcade： arcade games游戏机室游戏

Arca-dia /ai'keidia; NAmE air'k-/ noun [sing.] a part of southern Greece used in poetry and stories to represent an idea of perfect country life阿卡迪亚（希腊南部地 区，在j寺歌和小说中常用来指代世外桃源）

Arca-diail /ai'keidian; NAmE air'k-/ adj. of or connected with Arcadia or an idea of perfect country life 阿卡迪业 的；世外桃源式的

ar-ca-na /ai'keina; NAmE air'k-/ noun 1 [pi:] things that are secret or mysterious 秘密事件；神 k、唞物 2 [sing.] either of the two groups of cards in a TarOT pack/ deck, the major arcana and the minor arcana ptif卡纳牌 (塔罗特牌中的两组牌之一，分大阿卡纳和小阿丨;纳> arcane /ai'kein; NAmE a:r'k-/ adj. (formal) secret and mysterious and therefore difficult to understand 神秘 的；晦涩难懂的

arch /⑴灯；a:rtJY now/?，verfc， unoun 1 a curved structure that supports the weight of sth above it, such as a bridge or the upper part of a building拱（支撑如桥梁或房屋上部的弧形结构） 2 a structure with a curved top that is supported by straight sides, sometimes forming an entrance or built as al monument 拱门：Go through the arch and follow 撕與出::乾敌辨H沿贺棒隹俞MirWe A/th is a/amous london 〖cmdmarfc.大理石挺门是伦敦著名的标 志性建，筑。3 the raised part of the foot.formed by a curved section of bbnes 足背;，足弓一picture body 4 anything that forms a curved shape at the top 拱形； 拱形物：the deZi'cate arch 〇/ her gebrows 她那夤弯 ^勺 柳眉

■ verb 1 if you arch part of your body, or if it arches, it moves and forms a curved shape < 挺 > 成弓形：[VN] The cat arched it^s back and hissed.