1.array v.排列( to set or place in order);n.大批(large nitt( arge number)

例:The project calls for placing an anay of light sensors at a depth of five kilometers under the ocean surface. // arrayed in parallel lines平行排列

2.arrest v.依法逮捕，拘留( to seize)；阻止，抑制(to stop or check)

联想记忆：ar（加强）+rest(休息)一强制休息一拘留

例:Did the police have reasonable grounds to arrest him?

派生词:arrester(n．避雷器;逮捕者)

3.artery n.【医】动脉

词根记忆：arter(管道)+y--（体内的）管道--动脉

注意：vein(n.静脉)

例:Studies indicate that refraining from eating certain foods could help reverse blockage of coronary artenbs.

派生词:arterial(a.动脉的)

4.arthritis n.关节炎(inflammation of a joint or joints of the body)

词根记忆：arthr(连结：关节)+itis(炎症)--关节炎

同根词：arthropod(n.节肢动物)

5.articulate v.清楚地表达（to give clear and effective utterance to）;a．善于表达的（expressing oneself clearly and effectively）

联想记忆：articul（关节）+ate --关节之间相连，（说话）上下相连--清楚地表达

例:The manager takes action without being able to articulate reasons for that particular action.,,Please practice your speech until you are morearticulate.

派生词:articulation(n.发音;连接；关节)

6.artifact n.手工艺器物：文物(thing made by man, esp. of archaeological interest)

词根记忆：arti(技巧)+fact(做)--技巧做成的--手工艺器物

例:The museum can store and exhibit its more than 12,000 artifacts.

7.artificial a.人工的，人造的(man-made)

词根记忆：arti( =skill技术)+fic(面)+ial(…的)--在表面使用技术的--人造的

例:People who use the artificial sweetener aspartame are better off consuming sugar.

派生词:artificiallv( ad.人工地)

8.artisan n．手工业工人，手艺人（craftsperson）

词根记忆：arti(技巧)+san(人)--有技巧的人--手艺人

例:In ancient Thailand, much of the local artisans' creative energy was expended for the creation of Buddha images.

9.ascending a.上升的( moving or going upward)

词根记忆：a+scend(爬)+ing --向上爬的--上升的

例:ascending order升序

10.ascribe v.(to)归于，归因于(to credit)

词根记忆：a（向）+scribe(写)--写在什么上面--归于

例:Productivity should be ascnbed to categories of workers, not to individuals.