In the two years since Mr. Ma's company, Tencent, went public in Hong Kong, it has grown into a powerhouse that has crushed everyone else in the field.
crush in the field---在一个领域中挤垮所有竞争对手
"Well, they've got all the eyeballs in China. And now they're beginning to cash in on that."
cash in on---利用..捞好处
It is a world that now dominates the life of Li Meixuan, a 21-year-old college student in Beijing who became hooked on Tencent's QQ offerings in high school.
Tencent will not release statistics on how its Q-coins are doing, but analysts say the currency is so popular that an underground economy in Q-coins has emerged, even though the coins are not redeemable for cash. 兑现
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