first ice初冰firstadj.第一的；最初的adv.首先；第一n.最初；(序数词)第一First Track -- Snow INC第一首歌first-generation computer第一代计算机first order mass action law一级质量作用定律first-to-file principle先申请原则First Arrival Date in China首次抵华日期first-order interpolation一阶内插计算first Chebyshev polynomials第一类切比雪夫多项式first moment of the surface静力表面矩First Lord of the Admiralty英国海军大臣First class or economy?补偿滤光器,调整滤波器

1. I don't know the first thing about the traffic accident.
   这起交通事故我一点儿都不知道。
2. The first thing he does after getting up is to make the bed.
   他起床后的第一件事就是整理床铺。
3. The first thing that we did when we conquered the town was to haul down the enemy's flag and raise our own.
   我们占领这座城市以后以后所做的第一件事就是降下城里敌人的旗帜，升起我们自己的旗帜。
4. The first thing that struck me was the numerous charts that covered the walls.
   首先给我留下深刻印象的是墙上有大量图表。