日：在任何地方，视觉上或平均太阳穿过子午线的时间间隔。
solar day //
→seeday
time for Earth to make a complete rotation on its axis
同义词： day / twenty-four hours / twenty-four hour period / 24-hour interval / mean solar day
太阳日
太阳日
太阳日
太阳日
太阳日
太阳日
太阳日 （ solar day ）：地球以太阳为基准，绕地轴自转一周所需的时间。
Consequently, the timing and rhythms of biological functions must closely match periodic events like the solar day, the tides, the lunar cycle, and the seasons.
因此，生物功能的时间和节奏必须与太阳日、潮汐、月球周期和季节等周期性事件密切契合。
Without the external cue, the difference accumulates and so the internally regulated activities of the biological day drift continuously, like the tides, in relation to the solar day.
如果没有外界提示信号，这种差异就会积累，生物的日常内部调节活动就继续进行，像与太阳日有关的潮汐活动那样。
A sidereal day is about 4 minutes shorter than a solar day.
一个恒星日比一个太阳日大约短4分钟。
Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.
VOA : special.2010.07.28
To prove a point that solar can work for every day practical uses, Kotak Solar recently electrified a village in India with solar power.
But we set up our solar panels the day after Sandy and we had lights and power.
FORBES: Mobile Solar Generators - One Man's Odyssey to Bring Power Back to New York
And, now that the world is talking seriously about cutting greenhouse gas emissions, solar may have its day in the sun.