本期内容：

Facebook’s quarterly results roundly beat expectations. Overall revenues were up 59% year-on-year, to $6.4 billion, helped by spiking sales of video advertisements and ads on Instagram, the social-media giant’s picture-sharing platform. The firm now makes 84% of its advertising income from mobile ads, and has 1.7 billion users monthly. Shares rose 5% in late trading.

词汇讲解：

Roundly: 彻底的
Spiking: 高企的
Late trading: 盘后交易

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