An iso-quanta is a line in space formed by points with the same objective function value.

iso - quanta是由具有相同目标函数值的点所构成的空间中的一条线。

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So, if you have a line in space, well, you can imagine may be that you have a point on it.

如果在空间里有一条直线，你可以想像出来上面有一点。

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If you had looked down upon the solar system on August 14, you would have seen the sun, Earth and Jupiter making a straight line in space.

8月14日那天，如果从外太空俯瞰太阳系，太阳、地球和木星刚好形成一条直线。

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This exploits one of the predictions of Einstein's general theory of relativity: that the path of a beam of light (which is a straight line in empty space) is bent inwards by the gravity of a massive object.

ECONOMIST: Cosmology: I spy with my little gravitational lens | The

They definitely had a lot of problems in the first half, but after that they defended the 18-yard line and left no space in behind.

BBC: pundits on Carling Cup final

Interestingly, this is totally in line with IPOs in the hot social media space: according to analysts in the space, 60% of the Internet or social-media companies that completed U.S. IPOs since 2010 are trading below offer price as well.

FORBES: A Look Back at 2010-2011 Class of Biotech IPOs: Not Dead Yet