约5500年前，埃及人发明了太阳钟。
About 5,500 years ago, the Egyptians invented the sun clock.
在阴天或晚上，无法用太阳钟或日晷看出时间。
On cloudy days or at night it was impossible to tell the time with a sun clock or a sundial.
当然，太阳时钟只能在晴天工作；当温度下降到接近冰点时，水钟就会失灵，长期漂浮的东西因为下沉或堵塞而无法工作。
Sun clocks worked, of course, only on clear days; water clocks misbehaved when the temperature fell toward freezing, to say nothing of long-run drift as the result of sedimentation and clogging.
水钟是第一种不利用太阳计时的钟。
虽然现在只是早晨9点钟， 可太阳却特别炙人。
The sun is particularly blazing this morning, although it is only nine o'clock.
电脑屏幕、iPad等发出的光线对生物钟的影响和太阳光差不多。
The light from a computer screen or an iPad has roughly the same effect as the sun.
舱内的宇航员每隔90分钟就能领略到太阳如何在清晨的地球上空点燃巨大的彩虹。
The shuttle enabled its astronauts to see, every 90 minutes, how the sun ignited a giant rainbow over the morning Earth.
很可能你看到的是一艘低轨宇宙飞船反射的太阳光，因为这些航天器每90分钟左右绕地球一圈。
What you are seeing, most likely, is a spacecraft in low Earth orbit reflecting back sunlight as it circles the Earth once every 90 minutes or so.
同样，OCO也会研究太阳反射光线中的二氧化碳和氧气特征光谱，它将于705公里的上空以99分钟绕地球一圈的速度飞行。
OCO will similarly study carbon dioxide and also oxygen signatures in reflected sunlight. It will fly at an average altitude of 705km and orbit the Earth about every 99 minutes.
然后，将闹钟定到太阳完全升起后约30分钟的时刻。
Then have the alarm set about 30 minutes after the SUNS fully up.
围绕着太阳，人类布置了一系列航天器，可以在观察太阳黑子的形成，耀斑的爆裂，并在太阳风暴袭击地球前30分钟观察到。
The sun is surrounded by a fleet of spacecraft that can see sunspots forming, flares crackling and a solar storm about 30 minutes before it hits Earth.
这架名为“太阳驱动”的飞机有着与空客A340一样宽的翼展，夜间飞行完全由白天吸收的太阳能驱动，共飞行了26小时零9分钟。
Solar Impulse, whose wingspan is the same as an Airbus A340, flew 26 hours and 9 minutes, powered only by solar energy stored during the day.
奇异子的速度很大，能在四分钟内穿过像太阳这样的恒星或行星。
Q balls are speedy, zipping through a planet or star like our Sun in less than four minutes.
早晨至少要获得15分钟阳光，不戴太阳镜。
And get at least 15 minutes of sunlight, without sunglasses, in the morning.
天气温暖的时候，每周在正午太阳下暴露10至15分钟数次。
You can get 10-15 minutes of high-noon sun exposure in warmer climates a few times a week.
不要害怕晒太阳，就只在脸上和手臂涂上防晒霜并保证掩盖住这样的话晒20分钟并不会灼伤你的皮肤。
And don't be afraid to spend some time in the sun-just apply sunblock to your face and hands and be sure to cover up after about 20 minutes so you don't burn.
下半幅图是白天的景象，太阳的轨迹每15分钟曝光一次。
Contrastingly, images taken during the day compose the bottom of the image, with the Sun being captured once every 15 minutes.
此外，美国国家航空航天局（下文简称NASA）还计划测试一个完整尺寸的太阳帆，为航天器提供绿色推进能源，以及测试一个深空原子钟。
NASA plans to test a full-size solar sail for chemical-free propulsion and a deep space atomic clock.
在日出30分钟前，在清晨的天空可以看见各大行星排列在太阳路径上（土星除外）。
30 minutes before sunrise, the morning sky will show all the planets aligned across the sun’s path, except Saturn.
我们看到的月亮，是1.3秒以前的；太阳，是8.3分钟以前的；离地球最近的星星，是4.2年以前的；而离地球最远的星系，则是133亿年前的。
We see the moon as it was 1.3 seconds ago; the sun as it was 8.3 minutes ago; the nearest star 4.2 years ago; the most distant galaxy as it was about 13.3 billion years ago.
你们青年人朝气蓬勃，正在兴旺时期，好像早晨八、九点钟的太阳。
The youth, full of vigor and vitality, are as fresh and promising as the morning sun at 8 or 9 o'clock.
太阳能飞机HB - SIA今年4月已经完成了首次试飞，当时在1200米的高空持续飞行87分钟。
HB-SIA completed its first test flight in April this year, flying for 87 minutes at a height of 1,200m.
太阳能飞机HB - SIA今年4月已经完成了首次试飞，当时在1200米的高空持续飞行87分钟。
HB-SIA completed its first test flight in April this year, flying for 87 minutes at a height of 1, 200m.
三星说，BlueEarth的太阳能面板在正常阳光下充电一小时后，就可以保证10分钟的通话时间。
Samsung said the Blue Earth phone can accept enough charge under an hour of normal sunlight to allow for 10 minutes of talk.
太阳光其实颇具破坏性。为了应对这种破坏性，夏日阳光直射之下，树叶中的蛋白质每隔45分钟就迅速更新一遍。
sunlight is actually quite destructive, and to counter this effect leaves rapidly recycle their proteins as often as every 45 minutes when in direct summer sunlight.
20分钟后，我们获准进入内院。太阳下，正处于休息时间的士兵和救援人员正躺在行军床上睡觉。
After twenty minutes, we were admitted to the inner courtyard, where off-duty marines and aid workers were trying to sleep on cots in the sun.
20分钟后，我们获准进入内院。太阳下，正处于休息时间的士兵和救援人员正躺在行军床上睡觉。
After twenty minutes, we were admitted to the inner courtyard, where off-duty marines and aid workers were trying to sleep on cots in the sun.
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