1.This increase in mobile device usage has also led to the growth of the mobile gaming industry.

lead to引起；导致

Mass unemployment may lead to social upheaval.
大批失业会导致社会动乱Hf9KqV1.738dT=0&c。

2.In fact, one company alone in some of top ten, games are actually pulling in over a billion in revenues.

pull in赚取

I only pull in 15,000 a year as a social worker.
作为一名社工，我每年仅挣15,000hBf9;22)uss8YCXS5R7。

3.Many of the gaming companies depend on loyal gamers for fresh ideas.

depend on依靠

They depend on the goodwill of visitors to pick up rubbish.
他们相信游客会自觉捡起垃圾^2MP,,,-^G。

4E^fJg(]6BWo8,j+e,*TQ~R(mS=6b.KeC=tra3~+ZT9thwizX 内容来自:可可英语 http://www.kekenet.com/broadcast/201407/308930.shtml