哪个

nǎ ge which; who

app 可以

kě yǐ can; may; possible; able to; not bad; pretty good

竞猜

jìng cāi to try to answer a question (in a quiz, guessing game, riddle etc); quiz game

欧洲杯

Ōu zhōu bēi European cup (e.g. soccer)

平台

píng tái platform; terrace; flat-roofed building

介绍

jiè shào to introduce (sb to sb); to give a presentation; to present (sb for a job etc); introduction

网址

wǎng zhǐ website; web address; URL

：bt44net