除了一次性的市场或沟通活动外，只有几家大公司可以将社会媒体活动规模化。

There are relatively few big companies that have scaled social initiatives beyond one-off marketing or communications initiatives.

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我认为高收入者并不是固定的群体，更有可能是通过一次性资产活动或出售股权进行套现的企业家或首席执行长。

I doubt the roster of top earners is a fixed group. Rather, the top earners more likely are entrepreneurs or CEOs who cashed out of their companies via one-time events or stock sales.

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国家统计局认为，受一些一次性因素影响，比如：额外的法定假期，日本海啸和四月的热浪，二季度可能有0.5%的经济活动停止。

The ONS thinks that one-off factors—an extra bank holiday, the tsunami in Japan, a heatwave in April—may have knocked 0.5% off activity in the second quarter.

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