1.automation n．自動裝置(mechanism that imitates actions of humans)

詞根記憶：auto(自己)+mat(動)+ion--自動--自動裝置

例:Many workers who lose their jobs to automation will need government assistance to survive.

同根詞：autoalarm(n.自動報警器)

2.automobile n．汽車(a usually four-wheeled aLrtomotive vehicle)

詞根記憶：auto(自己)+mobile(可移動的)--可以自己移動的--汽車

例:The automobile industry dominated the American economy in the 1920's.

同根詞：automatic(a.自動的)

3.autonomy n.自治(self-government with respect to local or internal affairs)；自主（權）(the right of self-government)

詞根記憶：auto(自己)+nomy(名字)--給命運寫上自己的名字--自主

例:women's autonomy

派生詞:autonomous(a．自主的;自治的)

4.availability n.可用性（quality or state of being available)

詞根記憶：來自available(a．可用的)

例:The ample availability of land makes security of land tenure unimportant.

5.avalanch n.雪崩 (a large mass of snow, ice, earth, rock, or other material in swift motion down a mountainside or over a precipice );v.雪崩 ( to descend in an avalanche )

例:Over the same period, however, the number of visitors to ski resorts who were caught in avalanches decreased, even though there was no reduction in the annual number of avalanches in the Sordellian Mountains.

6.aversion n．厭惡，反感( antipathy)

聯想記憶：a+vers(轉)+ion--轉開--厭惡

例:Their aversion to government paperwork made them reluctant to pursue many government contracts.

同根詞：adverse(a.不利的)

7.avian n.鳥;a.鳥類的(of, relating to, or derived from birds)

詞根記憶：avi(鳥)+an--鳥；鳥類的

例:These results confirmed that avian species can develop preferences for palatable food through social leaming.

同根詞：aviator(n.飛行員)

8.aviation n.航空（術）（the operation of heavier-than-air aircraft）；飛機制造業(yè)(airplane manufacture)

詞根記憶：avi(鳥)+ation(表名詞)一像烏一樣飛一航空

例:Ardatilon fuel is projected to decline in price over the next several years.

同根詞：aviary(n．鳥舍，鳥籠)

9.avlator n.飛行家，飛行員(the pilot of an aircraft)

詞根記憶：來自aviate(v.飛行)

例:All trainees in a certain aviator training program must take both a written test and a flight test.

同根詞：aviation(n.航空)

10.avidly ad.渴望地，熱心地(eagerly)

例:The more rare something becomes, the more avidly it is sought by collectors.