1. domestic a. 本國的，國內的;家用的;家庭的

　　Washington responded by freezing the price of domestic oil.

　　華盛頓作出的反應是凍結國內的石油價格。

　　The store deals in objects of domestic utility.

　　那家商店出售家庭用品。

　　2. constant a. 不變的，恒定的 n. 常數

　　In our world nothing seems constant.

　　在我們這個世界上似乎沒有東西是永恒不變的。

　　The speed of light is an important constant.

　　光速是一個重要的常數。

　　3. cliff n. 懸崖，峭壁

　　He couldn't find a hold on the cliff.

　　他在懸崖上找不到一個可以站住腳的地方。

　　The narrow path zigzags up the cliff.

　　這條狹窄的小徑曲曲折折地向峭壁伸延。

　　4. authority n. 權威;當局

　　We see him as an authority on the subject.

　　我們把他看作為這方面的權威。

　　The new building must be financed by the local authority.

　　新大樓的建筑資金必須由地方當局提供。

　　5. audio a. 聽覺

　　As with visual feedback, computer games tend to excel at positive audio feedback.

　　和視覺反饋一樣，計算機游戲擅長于正面聽覺反饋。

　　6. attitude n. 態度

　　She shows a very positive attitude to her work.

　　她工作態度非常積極。

　　7. community n. 社區，社會

　　Community colleges have become popular and their enrollments have increased rapidly.

　　社區大學日漸增多，報名人數迅速增長。

　　The welfare of the community is the same as the welfare of its members.

　　社會的福利就等于其成員的福利。

　　8. commit vt. 犯(錯誤，罪行等)，干(壞事等)

　　They committed outrages on innocent citizens.

　　他們對無辜的市民犯下了暴行。

　　9. comment n. /vt. 評論

　　He made no comments on our proposal.

　　他對我們的建議沒有作評論。

　　He commented that it was an excellent film.

　　他評論這電影很精彩。

　　10. distinguish vt. 區分，辨別

　　It's important to distinguish fact from fiction.

　　把現實與虛構區分開來是很重要的。

　　We should distinguish between right and wrong.

　　我們應辨別是非。