Calculating this angle would allow astronomers to measure what was then the ultimate goal: the distance of the Earth from the Sun.
计算这个角度可以让天文学家测量地球到太阳的距离，这是当时的终极目标。
As one hemisphere of Earth tilts farther from the sun, the arc of the sun's daily path seen from that location lowers toward the horizon.
当地球一个半球距太阳的倾斜度更大时，从那个位置看到的太阳每日运行轨迹的弧线就会向地平线下降。
Dark glasses screened his eyes from the sun.
他戴了一副墨镜，保护眼睛不受阳光照射。
The ozone layer screens out dangerous rays from the sun.
臭氧层能遮挡住来自太阳的有害射线。
He developed a mathematical formula describing the distances of the planets from the Sun.
他提出了一个描述各行星与太阳之间距离的数学公式。
The axis is pointing away from the sun in winter.
冬天，地轴指向远离太阳的方向。
Solar panels take energy from the sun and turn it into electricity.
太阳能电池板从太阳获取能量并将其转化为电能。
When the axis points away from the sun, you get less heat.
当地轴的指向远离太阳时，得到的热量就会变少。
Your town doesn't get as much light or heat from the sun.
你的城镇不会从太阳那里获得那么多的光或热。
A special material on the surface receives UV light from the sun.
表面的一种特殊材料接收来自太阳的紫外线。
The distance from the Sun to Mars is more than 141 million miles.
太阳和火星之间的距离超过1.41亿英里。
When your town has winter, the earth's axis is pointing away from the sun.
当你所在的城镇进入冬季时，地轴指向远离太阳的方向。
Mars is the fourth planet from the Sun and the next planet beyond the Earth.
火星是离太阳第四远的行星，也是地球之外的下一个行星。
Keep yourself away from the sun around the noon, or it may burn your skin.
中午时分要远离太阳，否则它会晒伤你的皮肤。
It is further from the Sun than the Earth, so temperatures on Mars are much lower.
但它离太阳的距离比地球远，所以火星上的温度要低得多。
In winter, when your part of the earth points away from the sun, you have colder days.
在冬天，当你所在的地球部分的朝向远离太阳时，天气就会变冷。
The seasons are made by the northern end of the axis pointing towards or away from the sun.
季节是由地轴的北端指向或远离太阳形成的。
Your part of the world gets more heat from the sun when the northern end of the axis points to the sun.
当地轴的北端指向太阳时，你所在的地方从太阳那里获得更多的热量。
Rainforests have their own perfect system for ensuring their own survival; the tall trees make a canopy of branches and leaves which protect themselves, smaller plants, and the forest animals from heavy rain, intense dry heat from the sun and strong winds.
雨林有自己完善的系统来确保自身的生存；高大的树木有枝叶形成的树冠层来保护自身，树冠也保护着矮小的植物以及动物不受暴雨、酷暑及强风的侵扰。
Chang'e 4 gets energy from the sun through its solar panels.
嫦娥四号通过太阳能板从太阳获取能量。
In winter the heat produced by a city can equal or surpass the amount of heat available from the Sun.
在冬天，一个城市产生的热量可以与太阳提供的热量相等，甚至超过这一数值。
Many types of radiation, especially ultraviolet rays from the Sun, can damage skin cells and cause cancer.
许多类型的辐射都会损害皮肤细胞并导致癌症，尤其是来自太阳紫外线的辐射。
During the day, heat from the Sun can be conducted into these materials and stored to be released at night.
在白天，来自太阳的热量可以被传导到这些材料中储存起来，在晚上释放。
The earth's not always the same distance from the sun, and it's not always tilting toward the sun at the same angle.
地球到太阳的距离并不总是相同的，地球也并不总是以相同的角度倾斜向太阳。
The implication is that the gases in the mantle came not from the sun but from the early accretion of rocky material.
这意味着地幔中的气体不是来自太阳，而是来自岩石物质的早期积累。
The sea slugs are so good at gathering energy from the sun that they can live up to nine months without having to eat any food.
海蛞蝓非常善于从太阳中收集能量，它们可以在不吃任何食物的情况下存活九个月。
Tomorrow, we will dump a slightly larger amount, with the cumulative concentrations now trapping more and more heat from the sun.
明天，我们会释放出更大的量，累积的浓度现在会吸收越来越多的来自太阳的热量。
The planets, in order of their distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
按照它们与太阳的距离排列，这些行星分别是水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星。
Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are screened off.
来自外太空的各种宇宙射线通过空气进入大气层，但来自太阳的大量辐射却被屏蔽了。
For instance, without a tree to absorb radiation from the Sun, to offer shade, the full intensity of that radiation reaches the ground.
例如，如果没有树木来吸收太阳的辐射并提供树荫，那么太阳辐射就会完整地到达地面。
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