大家都搜：
adv.优秀地；最好地；第一流地
adj.优秀的；第一流的
1、art class───美术课
2、first bases───n.一垒的位置
3、first classman───一等兵
4、first-class───头等，第一流；最高级
5、first causes───主要原因；原动力
6、first classmen───一等兵
7、first base───n.一垒的位置
8、first classes───头等，第一流；最高级
9、fire clays───耐火土；火泥
1、Soon afterwards he was hauled out of the first-class section of an Air France flight to Paris.───他从法国航空飞往巴黎的头等舱里拖出来随即就被扣压。
2、How much is the fare for two first-class tickets to Paris?───两张到巴黎去的头等票多少钱？。
3、car was in first-class condition.───车子处于最佳状态。
4、The food was first-class.───这些食物是一流的。
5、Metrics and visualizations help you identify important parts of your code, allowing you to extract them as first-class design elements.───指标和可视化有助于识别代码的重要部分，从而提取出一些设计元素。
6、Bill: Ah. . . economy. But I thought if I make a " pass " at you, then my boarding pass would pass for first class.───比尔：嗯……经济舱，但我想如果我得到你的允许，我就可升级到头等舱。
7、He did not get an immediate reply but he was elevated to the rank of marquis, first class, a reward for his perceived loyalty to the Qing.───虽未得到立即答复，但清政府授予他侯爵爵位，跻身头等阶层，作为他保护朝庭的奖赏。
8、They always stayed in first-class hotels.───他们总是下榻于最高级的宾馆。
9、XML's status in databases has changed in the last couple of years from a temporary worker to that of a first class citizen.───XML在数据库中的地位在过去两年中已经发生了变化，从“临时工”变成了重要成员。
1、The food was first-class.