Chapter XXI.

Of the Magnitude of the Sun.

Anaximander says, that the sun itself in greatness is equal to the earth, but that the circle from whence it receives its respiration¹ and in which it is moved is seven and twenty times larger than the earth. Anaxagoras, that it is far greater than Peloponnesus. Heraclitus, that it is no broader than a man’s foot. Epicurus, that he equally embraceth all the foresaid opinions — that the sun may be of magnitude as it appears, or it may be somewhat greater or somewhat less.

1 respiration   

n.呼吸作用；一次呼吸；植物光合作用

参考例句：

• They tried artificial respiration but it was of no avail.他们试做人工呼吸，可是无效。
• They made frequent checks on his respiration,pulse and blood.他们经常检查他的呼吸、脉搏和血液。