汉：来源于希腊语，意为"up"(anabatic),"back"(anagram),"again"(analects),"throughout"(analyze),"intensive" (anatomy)等，变化型an-。
英：before verbs an-, prefix meaning 1. "upward," 2. "back, backward, against," 3. "again, anew," from Greek ana- "up to, toward, exceedingly, back, against," from ana "up, on, upon, throughout, again," cognate with Old English on, from PIE root *ano- "on, upon, above" (see on). 1.anabolism
n.assimilation 同化作用 *ana(=up),bol(=throw)
例句：We spent months studying the biological principles of anabolism.我们花了好几个月来研究同化作用的生物学原理。
2.anachronism
n.mistake in dating something;something out of date now or in a description of past events.时代错误；过时的东西 （朝代变迁）
例句： Many fear that British English is becoming an anachronism as American English grows in popularity,even in Europe.美工英语在世界甚至在欧洲都如此流行，以至于许多人担心英式英语会成为不合时代的过时的语言。
3.analogous
adj.similar or parallel 类似的，相似的，想像的 （言词相关的） ana(=again),log(=speech)
例句：First we teach the students to recognize grammatical stuctures that are analogous to those found in English.首先，我们教学生学习那些和英语类似的语法结构。
4.anatomy
n.science of the structure of animal bodies 解剖学；解剖 *ana(=intensive),tom(=cut)
例句：My first course in biology was Anatomy 101,taught by Dr.William Schaeffer.我听的第一门生物学课程是威廉.赛夫博士讲授的解剖学101。
5.anathema
n.formal declaration of the church,excommunicating somebody or condemning something as evil 被基督教诅咒的人或物
例句:In this day of downsizing,corporate takeovers have become anathema.在这个企业结构调整的时代，企业接管者常成为被诅咒的人。