Addams Jane 简·亚当斯(1860-1935)；美国社会工作者和作家；1889年，她在芝加哥创办赫尔福利院来帮助穷人。

　　addend n. 加数(在3+5=8的加法中，3和5都是加数)

　　ad•dend ● n. (复) addends

　　adder n. 1 蝰蛇 (欧洲产的小毒蛇) 2 猪鼻蛇 (北美产的无毒蛇)

　　ad•der ● n. (复) adders

　　addict ① n. 有瘾的人［a drug addict 吸毒成瘾的人］

　　② v. 上瘾［Some people are addicted to watching TV. 一些人看电视成瘾。］

　　ad•dict ● ①n. (复) addicts ② v. addicted, addicting

　　addiction n. 沉溺, 吸毒成瘾

　　ad•dic•tion ● n. (复) addictions

　　addition n. 1 加法 2 添加，加上［The lemonade tasted better with the addition of sugar. 柠檬水加糖，味道更佳。］ 3 附(添)加的人、物或者部件［The twins were a new addition to the family. 这个家庭添了对双胞胎。］

　　-in addition 也，另外［And, in addition, we visited relatives while we were in town. 另外，我们在城里时还看望了几个亲戚。］- in addition to 除……之外［In addition to playing flute, Sue is on the swim team. 除会吹长笛外，苏还是游泳队队员。］

　　ad•di•tion ● n. (复) additions

　　additive n. 添加剂，添加物(只要少量地加入其它物质，就能产生特殊效果；许多食品都含有添加剂，保持食品不迅速变质)

　　ad•di•tive ● n. (复) addictives

　　address ① n. 1地址 2 致辞, 演讲［The President’s address was broadcast on television. 总统在电视上发表广播讲话。］

　　② v. 1 在信封或者包裹封上写收件人的姓名地址 2 向……致辞［The principal will address our first assembly. 校长将在我们的第一次大会上致辞。］

　　ad•dress ① n. (复) addresses ② v. addressed, addressing