The noun 球迷 (qiúmí) means 'sports fan,' specifically a fan of ball sports such as soccer, basketball, or tennis. The character 迷 means 'obsessed' or 'fan.' For example, 球迷们非常兴奋 means 'The fans were very excited.'
球迷们在场外排了很长的队。
Qiúmímen zài chǎng wài pái le hěn cháng de duì.
The fans lined up in a very long queue outside the venue.
作为一个老球迷,他每场比赛都不会错过。
Zuòwéi yí gè lǎo qiúmí, tā měi chǎng bǐsài dōu bú huì cuòguò.
As a longtime fan, he never misses a single game.
昨晚的进球让全场球迷都沸腾了。
Zuówǎn de jìnqiú ràng quán chǎng qiúmí dōu fèiténg le.
Last night's goal sent the entire crowd of fans into a frenzy.