Hilary Clinton has some of the key attributes of a good secretary of state - stature and toughness, but her status as an erstwhile Obama rival might undermine an traditional trump card.

希拉里具备一位优秀国务卿的某些关键特质- - -才干和韧性，但她作为奥巴马前竞争对手的特殊身份，也可能会使该职位历来的王牌地位受到动摇。

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Senator Obama also had praise for his rival.

奥巴马参议员也赞扬了他的对手。

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When they stand side by side, people notice that Mr Obama towers over his rival.

当站在一起的时候，人们会觉得奥巴马会压倒他的对手似的。

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John McCain, the presumptive Republican nominee and Obama's rival in the general election.

CNN: Clinton endorses Obama, calls for party unity

John McCain, Mr Obama's rival for the presidency, wants to suspend America's relatively paltry tax on petrol, to secure lower prices for angry drivers.

ECONOMIST: Oil prices

Obama congratulated his rival John McCain and praised McCain's service to the country as a politician and Navy pilot and prisoner of war in Vietnam.

CNN: 'Change has come to America,' Obama says