Ajhir阿杰希尔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 synthetic language综合性语言a social disposition合群的性格a series of pictures连环画a protective gesture防护姿态Aquilegia parvifloran.小花耧斗菜A gruesome murder.骇人听闻的谋杀案A wobbling motion.摇摆的动作a phosphatic deposit含磷沉淀物aortic type of heart主动脉型心脏a doubtful character可疑的人物

1. Barry only visits his parents once in a blue moon.
   巴里很难得去看望他父母一次。
2. If the river overflows its banks, the garden gets flooded; but that only happens once in a blue moon.
   河水一旦泛滥，这片园子就会淹没，但这种情况极为罕见。
3. I see her once in a blue moon.
   我难得看到她。