a boat一只小船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 fragrant oleoresin.一种芳香的油性树脂。a close-fitting dress紧身连衣裙A technical knockout.技术胜利A mounting for a gem.珠宝的底托a tentative explanation暂定解释a policy of appeasement绥靖政策A crackdown on crime.对犯罪进行制裁a carpet of green grass绿草茸茸a rebel without a cause青年判逆者a demonstrative science实验科学