For the Earth to maintain a constant average temperature, such emissions from the planet must balance incoming solar radiation.

为了使地球保持恒定的平均温度，来自地球的这种辐射必须平衡入射的太阳辐射。

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In many—even most-space—themed films, whenever Earth faces a disaster,the solution is always running away from the planet in spaceships.

在很多甚至是大多数以太空为主题的电影中，每当地球面临灾难时，解决办法总是乘坐宇宙飞船逃离这个地球。

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They said they were from the planet Venus.

他们说他们是从金星来的。

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Voice rumbling from the planet's core Face upturned; see Children of the universe, They shine in the night;

VOA: special.2009.04.17

You bring iron ore from one part of the planet, carbon, limestone, you put it into this reactor and you ship this all over the world.

你得到钢铁从地球的一个地方，还有碳，石灰岩，将它们放入这个反应器,你将它运送到世界各地。

麻省理工公开课 - 固态化学导论课程节选

Depending on how far the planet is from the Sun and where it's located, you will get the left-hand side.

取决于行星到太阳的距离以及行星的位置,你就能列出等号左边的式子

耶鲁公开课 - 基础物理课程节选

The minister said all waste was a valuable resource from the planet which must be reused.

BBC: Zero Waste Plan debate

An outbreak of Marburg sends a shudder through the select community dedicated to eliminating diseases from the planet.

ECONOMIST: There are few worse viruses than Marburg

You can order the CDC to destroy their stocks of smallpox, and eliminate this unnecessary risk from the planet.

FORBES: It's time to destroy the U.S. smallpox reserves