This radiation pressure is thought to shape the tails of comets and is useful for pushing solar sails in space.

这种辐射压力被认为是彗尾形成的原因。 另外，它也是太阳帆在太空中前进的动力来源。

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You thought your colleagues would appreciate your devotion to work, but they might feel your hardworking exerts too much pressure on their part. Some of them might even make some cynical remarks.

你以为你的“敬业”会被同事赞赏，但没准儿别人却因为你“太努力”而倍感压力，甚至在一旁说你的风凉话。

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It is thought to lower risks of heart disease, some cancers, diabetes and obesity, and it's known to reduce cholesterol, blood sugar and blood pressure.

它有助于避免心脏病、一些癌症和糖尿病的发生，同时在减低胆固醇、血糖和血压方面也有显著的效果。

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The lid of a pressure cooker thought to be used in the device was found on a rooftop at the scene, a federal law enforcement official with firsthand knowledge of the investigation told CNN.

CNN: Sources: Possible suspect sought in Boston bombing

Some of the tour operators said they thought the logjam of licenses was caused by political pressure, particularly from Sen.

CNN: Eased travel to Cuba not without hurdles

Of the 700 teachers who completed the ATL questionnaire, 52% thought pressure to be popular on social networking sites was also a source of strain.

BBC: Pupils 'under greater pressure'