进入

jìn rù to enter; to join; to go into

：bb999net 现在

xiàn zài now; at present; at the moment; modern; current; nowadays

哪些

nǎ xiē which ones?; who?; what?

app 可以

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

买

mǎi to buy; to purchase

球

qiú ball; sphere; globe; CL:個|个[ge4]; ball game; match; CL:場|场[chang3]

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

stb