assume v 假设,承担, 呈 ,承担, 呈 ;
assure v. 保证 ,使安心,让放心
astonish v. 使吃惊;
astronaut n. 宇航员
at prep.[位置, 场所, 地点,时间]在时,在中,在方面,向,以 forty/在 40 岁的时候; at the beginning of the month/在月初; at Christmas/在圣诞节; aim at/对准..; throw at /朝扔be pleased at/对感到高兴;be surprised [frightened] at /听到而吃惊; at ones request/应某人的请求; at the rate/speed of /以每小时..速度);
athlete: n. 运动员
assembly n. 集合, 装配, 集会;
assess v. 评估;
assist v. 帮助,援助,协助 )
attempt n. 努力, 尝试v. 企图, 尝试 ;
attend v. 注意, 出席, 参加, 上 a wedding /出席婚礼; be attended by/由...陪同; 由...照料);
age n. 年龄 v. 变老成年 ;
ago adv. 以前,以往;
attach v. 贴上,系上,缚上