A/S铝硅比aart.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 Rembrandt self-portrait伦勃朗自画像a few crumbs of information点滴消息A charitable act or gift.慷慨行为，捐助物a domed forehead/ceiling隆起的前额；圆顶篷Aortic cusp of mitral valve二尖瓣主动脉尖a set of phonograph records一套唱片a self-seeking politician一个专为个人钻营的政客A lunar excursion module.登月舱登月用的舱a morbid liking for horrors对恐怖片病态的喜爱A snowstorm is coming up.一场暴风雪正在酝酿中。