1.calculus n.结石(a concretion usually of mineral salts around organic material found especially in hollow organs or ducts)；微积分学( the mathematical methods comprising differential and integral calculus)

词根记忆：calculr计算）+us一微积分学

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

2.calefaction n.加热(heating up)；发暖昨用

词根记忆：cale(热)+fact(做)+ion--加热

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

联想记忆：cal(看作call叫)+end（结束）+ar--年到头对日子的叫法--日历

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

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

联想记忆：小牛(calf)是半(half)大的牛

5.caller n.访客(a person who goes to a house or a building)；打电话者：召集员 (one that calls)

词根记忆：来自call(v.呼叫：拜访)

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

同根词：callable(a．随时可偿还的：请求即付的)

6.calligraphic a．书法的，书写的(of beautiful handwriting)

词根记忆：来自calligraphy(n.书法)

例:a miniature calligraphic composition微型书法作品

7.camcorder n.摄录像机(a small portable combined camera and VCR)

词根记忆：和recorder(n.录音机)一起记

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

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

联想记忆：打起战役(campaign)或搞起运动来都需露营(camp)

例:sales campaign销售大战//election campaign竞选活动

9.campsite n.营地(site of a camp)

联想记忆：camp(露营)+site(地点)--露营的地点--营地

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

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

联想记忆：can(能够)+ary--有能耐，能歌善舞的人--女歌星

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