More dangerously for Groupon, big online firms have begun to enter the fray.

对团宝来说更危险的是，另一些大型网络企业已开始加入战端。

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Microsoft will certainly re-enter the fray, although none of its operating systems seems a good fit for tablets.

微软毫无疑问会重新加入战端，尽管它好像连一个适合平板电脑的操作系统都没有。

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Like most big life insurers, Aviva did enter the fray with one distinct advantage. It had already had a practice run.

英杰华和多数大型人寿保险公司一样，在加入战局的时候拥有一个特别的优点——历经实战。

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The answer is: both will, in tandem (though other Russian firms may also enter the fray).

ECONOMIST: The government signals the end-game | The

To make matters even more complicated, German broadcaster RTL may yet enter the fray.

CNN: Branson, Murdoch square off in media war

Microsoft will certainly re-enter the fray, although none of its operating systems seems a good fit for tablets.

ECONOMIST: The iPad is a success, but other tablets may not be