1.calculus n.結石(a concretion usually of mineral salts around organic material found especially in hollow organs or ducts)；微積分學( the mathematical methods comprising differential and integral calculus)

詞根記憶：calculr計算）+us一微積分學

例:Newton developed mathematical concepts and techniques that are fundamental to modern calculus.

2.calefaction n.加熱(heating up)；發暖昨用

詞根記憶：cale(熱)+fact(做)+ion--加熱

3.calendar n.日歷(a page or series of pages showing the days, weeks and months of a particular year, especially one that you hang on a wall);厲法；日程表(a record of what you have to do each day)

聯想記憶：cal(看作call叫)+end（結束）+ar--年到頭對日子的叫法--日歷

例:The North American Indians developed advanced full-year calendars based on systematic astronomical obseNation.

4.calf n牛犢，幼崽(the young of the domestic cow)

聯想記憶：小牛(calf)是半(half)大的牛

5.caller n.訪客(a person who goes to a house or a building)；打電話者：召集員 (one that calls)

詞根記憶：來自call(v.呼叫：拜訪)

例:They thus automatically inform the operator of the location and phone number of the caller

同根詞：callable(a．隨時可償還的：請求即付的)

6.calligraphic a．書法的，書寫的(of beautiful handwriting)

詞根記憶：來自calligraphy(n.書法)

例:a miniature calligraphic composition微型書法作品

7.camcorder n.攝錄像機(a small portable combined camera and VCR)

詞根記憶：和recorder(n.錄音機)一起記

例:The electronics company has unveiled what it claims to be the world's smallest network digital camcorder.

8.campaign n.戰役（series of military operations）；系列活動(a connected series of operations designed to bring about a particular result)

聯想記憶：打起戰役(campaign)或搞起運動來都需露營(camp)

例:sales campaign銷售大戰//election campaign競選活動

9.campsite n.營地(site of a camp)

聯想記憶：camp(露營)+site(地點)--露營的地點--營地

例:Another campsite was found in New Mexico with remains dated at 16,000 years old.

10.canary n.金絲雀(a small yellow bird with a beautiful song, often kept in a cage as a pet);女歌星(female singer)

聯想記憶：can(能夠)+ary--有能耐，能歌善舞的人--女歌星

例:I cleaned the bird cage and the canary disappeared.