A/G血浆中清蛋与球蛋白之比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 colour/laser printer彩色/激光打印机a collection of documents文件汇编A hot spot for tourism.江南长城已成为旅游热点。A protuberance or knob.凸起物或门把a hymn of thanksgiving.感恩赞歌a handsome tall young man英俊而高大的男青年a herring/tuna fishery鲱鱼/金枪鱼渔场A horse draws the cart.马拉车。a ship-building magnate造船界巨头A wayfarer or traveler.徒步旅行者或旅客