苹果

píng guǒ apple; CL:個|个[ge4],顆|颗[ke1]

App 超级

chāo jí super-; ultra-; hyper-

签名

qiān míng to sign (one's name with a pen etc); to autograph; signature

渠道

qú dào irrigation ditch; (fig.) channel; means

（ TG:yinxingkj）nib