第一dì yīfirst; primary; foremost; first and foremost:第一号种子选手 No. 1 seeded player天下第一 the best in the world该领域学者中名列第一的人 the first among the scholars in this field一个两门功课都获得第一的优等生 a very fine student who took a double first获得第一名 win first place; get a first; win a championship他在班上名列第一。 He stands first in his class.