打开

dǎ kāi to open; to show (a ticket); to turn on; to switch on

：bb77net 买

mǎi to buy; to purchase

球

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

APP 官方

guān fāng government; official (approved or issued by an authority)

下载

xià zǎi to download; also pr. [xia4 zai4]