Odum said Shell is focusing on biofuels from non-food sources like algae or switchgrass.

奥德姆称，壳牌公司正在使用海藻、柳枝稷等非粮食作物研发新的生物燃料。

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International oil companies such as Royal Dutch Shell PLC are betting they can tap unconventional sources of natural gas in China and copy their success in the u.

荷兰皇家壳牌有限公司(Royal Dutch Shell plc)等国际石油公司押注它们能在中国发现非传统天然气来源，并复制它们在美国所取得的成功。

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Palestinian medical sources say they were hit by an Israeli shell.

巴勒斯坦医疗组织称，他们是被以色列炮弹击中。

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As a recent inspection at the home of an Iraqi nuclear scientist demonstrated, and other sources confirm, material and documents are still being moved around in farcical shell games.

CENTERFORSECURITYPOLICY: Condi Rice signals the jig is up for Saddam

France's energy giant Total has stopped buying Iranian crude and Royal Dutch Shell, one of the biggest purchasers of Iranian oil, has cut back sharply, market sources told Reuters.

BBC: Iran 'halts oil sales to France and Britain'