1.butterfly n．蝴蝶(an insect with large colourful wings and a thin body)；追求享乐的人(a person chiefly occupied with the pursuit of pleasure)

联想记忆：butter(黄油)+fly(飞)一颜色像黄油一样会飞的东西一蝴蝶

例:The blue butterftys survival was indirectly dependent on sustaining a rabbit population of a particular size.

2.buttress n.扶壁(a projecting structure of masonry or wood for supporiing or giving stability to a wall or building)；v.支持(support)

例:This pragmatic approach is buttressed by Arizona and California.

3.bygone n.过去的事(past things)；a．以前的(past);过时的(outmoded)

例:All things antique have grown a market for bygone styles of furniture and fixtures.

4.bylaw n.地方法规(a local ordinance)；规章制度(rule)

例:The proposal to amend the bylaws of an organization was circulated to its members.

5.cabin n.（船、机）舱（small room or compartment on a ship or an aircraft）

联想记忆：cab(出租车)+in（在里面）--出租车一般小的屋子--船舱

6.cabinet n.贮藏橱，陈列柜(piece of furniture with drawers or shelves for storing or displaying things)

7.cafrfeine n.咖啡因（stimulant drug found in tea leaves and coffee beans)

例:The candy company adds caffeine to the chocolate candy bars.

8.calamitous a．灾难的，悲惨白勺（being, causing, or accompanied by calamity）

词根记忆：来自calamity(n.灾难)

例:Growing evidence that coastal erosion occurs continuously, not just in calamitous bursts such as hurricanes, has led scientists and planners to urge a stringent new approach to limiting development along the nation's shoreline.

9.calcium n.钙(a silver-white divalent metallic element of the alkaline-earth group occurring only in combination)

词根记忆：calc(石头)+ium--僚石头一样硬--钙

例:A new study finds that the more hostility people show in their behavior and attitudes, the more likely they are to have calcium deposits in the arteries of their hearts.

10.calculate v.计算(to count)；估计(to figure out)；推测(to judge to be true or probable)

词根记忆：calcul(计算)+ate(做)--计算；推测

例:The unemployment rates that James calculates appear to be modest.//Canadian scientists have calculated that one human being should be struck every nine years by a meteorite.

派生词：calculated(a．有计划的：适合的)