地球

Professor Ronald Bracewell, a leading American radio astronomer, argued in Nature that such a superior civilization, on a visit to our own solar system, may have left an automatic messenger behind to await the possible awakening of an advanced civilization.

首先， 他们可能在几千年前或几百年前已来过我们地球，并且发现我们地球汉时普遍存在着的原始状态同他们的先进的知识相比是索然无味的。美国一位重要的射电天文学家罗纳德。

Optical remote sensing from space is concerned with the radiometric measurement about the Earth. Therefore, the design of the space remote sensor is the design of radiometry over time resolution, space resolution, spectral resolution, or some combination of these.

由空间对地球进行光学遥感，实质上是通过对地球表面的辐射度测量，确切地说是通过光谱辐射度测量，来获得必要的观测数据。

Radius of the Earth: The curvature designed into the faces of the pyramid exactly matches the radius of the earth.

地球半径：进入金字塔的脸上完全匹配地球的曲率半径设计的。

Whether houses are at rest or motion relative to the earth surface, the earth itself is not at all motionless .

不论建筑物对地球表面是相对静止的，还是运动的，地球本身并不是静止的。

8If houses are at rest relative to the earth surface, the earth itself is not motionless.

虽然房子相对于地球表面是静止的，但地球本身却是运动着的。

Work is of two kinds: first, altering the position of matter at or near the earth's surface relative to other matter; second, telling other people to do so.

有那么两种类型的工作，一种是改变地球表面上和表面附近物体与其他物体的相对位置（译注：哲学家就是这么描述修理地球这一工作的）。

Earth believes that this was in preparation of a relocation of a portion of their civilization to earth.

地球相信这是为了准备将他们文明中的一部分搬迁到地球上来。

What's more, since these detectors can look down through the Earth to see the universe, using the whole planet as a shield to absorb the riffraff of particles from the atmosphere, telescopes in different hemispheres can better observe neutrinos coming from all over the sky.

更为重要的是，这些探测器能够透过地球观测宇宙，它们将整个地球作为屏障，吸收来自大气层的粒子；将望远镜至于不同半球能够更好地观测来自整个天空的中微子。

Launch vehicle: Rocket system that boosts a spacecraft into Earth orbit or beyond Earth's gravitational pull.

运载火箭：将航天器推入绕地球轨道或脱离地球引力范围的火箭系统。

Launch vehicle: Rocket system that boost s a spacecraft into Earth orbit or beyond Earth's gravitational pull.

运载火箭：将航天器推入绕地球轨道或脱离地球引力范围的火箭系统。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。