a tree一棵树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 down-at-heel hotel寒酸的旅馆a sea of eternal regrets恨海无边a biological preparation生物制剂a girl with tousled hair头发蓬乱的女孩儿.a warm breeze/climate温暖的微风/气候A wide range of interest广泛的兴趣A New Way to Communicate通讯新途径aquicultural environment养殖环境A first or given name.首名或名a lookout point/tower瞭望哨/塔