竞争/竞赛（vi.） . 竞赛（n.） , 参赛者（n.） ,

competition

compete

competitor

compete

with/against sb

in sth

They are competing with each other for the champion of the basketball match.

在…中比赛

与某人竞争

为了…而比赛

for sth

How many countries competed in the ancient Olympic Games?