a bond轴向键
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 learning teachers' team
A Girl Named Helen Keller
a agricultural university农业高校
a sense of responsibility责任感
A gawky adolescent boy.笨手笨脚的小伙子长得高大笨拙的男孩
a piano teacher/lesson钢琴教师/课
a dance company/troupe舞蹈团/队
a metallic sound/click金属声;金属碰撞的丁当声
a couple of fresh herring几条鲜鲱鱼
A trunkful of manuscripts满箧著作