| 1. | These rays would not be visible to our eyes .
人眼是看不见这些射线的。 |
| 2. | Light passes into the eye through the pupil .
光通过瞳孔进入人眼 |
| 3. | The human eye has a pupil diameter which, of course, varies .
人眼瞳孔直径当然是可变的。 |
| 4. | It is not unusual for one person's hero to be another person's villain .
一个人心目中的英雄在另一人眼中是恶棍，这并不罕见。 |
| 5. | If the diameter of the pupil is 6 mm the eye is able to separate 120 seconds of arc .
如果瞳孔直径为6毫米，人眼可分辨120弧秒。 |
| 6. | The fine focusing or accommodation of the human eye is a function performed by the crystalline lens .
人眼的精细聚焦或调节的功能是由水晶体执行的。 |
| 7. | It is found experimentally that the eye behaves as though the "outputs" of the three types of cones are additive .
实验发现，人眼具有把三种锥状细胞的“输出”相加的特性。 |
| 8. | All intensity measurements using photometric units include a spectral bias (spectral response of the human eye) .
运用光度计装量进行辐射强度测量都应包括一个光谱的偏倚（人眼对光谱的敏感度）。 |
| 9. | If, however, part of this range is filtered out and only the remainder of the visible spectrum reaches the eye, we see a colour .
但是，如果将整个可见光谱中的一部分滤掉，而只让其余部分到达人眼，我们就会看到某种彩色。 |
