Who is likely to be their main competitor?

主要竞争对手可能是谁？

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My main competitor is an old man in poor health.

我的主要竞争对手是一个老人，现在健康恶化。

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By defeating their main competitor this firm has cornered the wheat market.

这家公司击败了主要的竞争对手而垄断了整个小麦市场。

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Nonetheless, Avandia is now likely to have a warning that its main competitor won't.

FORBES: Magazine Article

This makes Posterous, among other things, an improved front end to its own main competitor.

FORBES: Pick one: Autoposting is the end/salvation of blogging

In the last two years, Samsung has emerged as Apple's main competitor in the high-end smartphone market.

WSJ: Samsung refreshes iPhone-challenging Galaxy line