anura无尾目,无尾类anart.（用在元音音素前）一An ineffectual treatment for cancer.对癌症的无效治疗An age of ideological confrontation.一个意识形态对抗的年代An Experiment of Zero-Year Education零岁教育的尝试an insubstantial or vague semblance.不实在的模糊的表象。An elementary problem in statistics.统计学的基本问题An Axiological Study of Responsibility责任问题的价值论研究an apprehensive face/glance/look忧虑的面容/一瞥/目光an approximate number/total/cost约数；概算总额；约计成本An intimate conversation in private.交心私下的亲密谈话an unpleasant or disastrous destiny.不愉快、灾难性的命运。