汉语拼音:
【拼音】 dì yī jí
英语翻译:
【法】 first division
例句:
- 那是第一级的邮件,收到时却处于第二级状态。It arrived by first-class mail in second-class condition.
- 第一级运载火箭是用来发射火箭的,进入高层大气後即抛掉。The first-stage vehicle is used to launch the rocket and is then jettisoned in the upper atmosphere.