The eco-light is good for earth, and it's cost-effective and convenient, because it doesn't have to be changed every few months.

环保灯对地球来说是好的，而且它很省钱、方便，因为它不需要每隔几个月就更换一次。

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According to a new study, our love for jeans may be bad for Earth.

根据一项新的研究，我们对牛仔裤的喜爱可能对地球不利。

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If you have ever flown on a plane, you've got a new respect for Earth.

如果你坐过飞机，你会对地球产生新的敬意。

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The lead researcher was Chiching Liu of the Institute for Earth Sciences at Academia Sinica in Taipei.

VOA: special.2009.07.07

And the reward for the poet's sacrifice here on earth is not simply eternal fame that had long been a privileged image.

诗人在世上的牺牲所带来的回报,不单是长久以来那个特权印象：百世流芳。

耶鲁公开课 - 弥尔顿课程节选

He'd been imprisoned for his intellectual daring and affirming the Copernican view that the earth orbited around the sun.

因他对哥白尼的地心说的大胆的,认可和支持而被软禁着。

耶鲁公开课 - 弥尔顿课程节选

Astrobiological researchers have discovered significant regions below the surface of Mars that could be habitable for Earth-based life.

FORBES: Parts Of Mars May Be Habitable For Earth-Based Life

ESA, have plans to launch missions to search for Earth-like planets during the course of the next decade.

ECONOMIST: Planet-hunting: ESP for ESPs | The

Zephyr, as the craft was known, could be used for military applications, as well as for Earth-observation and communications.

BBC: Hydrogen-powered plane takes off