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（图为活动现场实拍图，150位嘉宾齐聚现场）。关于这个话题，新收录的资料提供了深入分析
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Players have to pay for chests or boxes and the keys to be able to open them in Valve’s games, and the company has reportedly sold billions of dollars’ worth of keys for Counter-Strike alone. The lawsuit said that Valve has made tens of millions of dollars in fees from the sale of virtual items on the Steam Community Market, as well. In addition to being able to sell items on Steam for funds directly credited to their Steam Wallet, players can also sell on third-party marketplaces for cash.。关于这个话题，PDF资料提供了深入分析
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