Measuring the quality factor G/T of a ground receiving system with cosmic radio sources is a method commonly used in most earth stations.

利用宇宙射电源测量地面接收系统品质因数G／T值是大多数地球站普遍采用的测量方法。

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Evolution, to quote a T-shirt sent me by an anonymous well-wisher, is the greatest show on earth, the only game in town.

引用一位匿名祝福者送给我的T恤上的话，进化，是地球上最伟大的表演，是唯一的选择。

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“The difference between then and now is as big as the difference between heaven and earth, ” said Zhang, 53, a small man wearing a white T-shirt and blue shorts.

“当时和现在的差别之大犹如天上和地下，”张长福说道，这个53岁的男人穿着一件白体恤和蓝色的短裤。

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People aren't talking about setting up Moon bases and throwing rocks at Earth, for example."

VOA: standard.2010.04.21

Actually, this is my first Earth Day and I don't know that much about it.

实际上这是我过的第一个地球日，我并不是很了解。

关于世界地球日 - SpeakingMax英语口语达人

There was a place in which from the earth there came-- it wasn't steam, what would it be?

在那里有个地方,从地下能冒出,似乎不是蒸汽,是什么来着

耶鲁公开课 - 古希腊历史简介课程节选

The results haven't been earth-shattering, but Glaxo did make some money.

FORBES: Prozac To Fight PMS Under New Name

"Each time we fly, we learn something different we didn't know about Earth, " Bolden said Sunday.

NPR: Latest Earth Satellite Launches From Calif. Coast

He wants to design a car that doesn't cost the earth to make -- financially or environmentally.

CNN: The new Model T?