AJMSAmerican Journal of Medical Sciencesaart.一(个)；每一(个)；任一(个)n.英语字母表的第一个字母；学业成绩得优者；表示“最好”的符号a dubious reply含糊其词的答复A dollop of jam一团果酱a slaB of stone一块石板a row of houses一排排房子a-c generator[电] 交流发电机a covert threat隐蔽的威胁。a dress uniform军礼服a-kainic acid海人草酸a guest speaker特邀演讲人a damn nuisance一个十分讨厌的东西