- 1. Even a piece of red or orange gelatin held between the eye and ocular will improve the visibility of the dust.
- 甚至只在眼睛和目镜之间，拿住一片红色或橙色的胶片，都会提高这片尘云的可见度。
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- 2. Even a piece of red or orange gelatin held between the eye and ocular will improve the visibility of the dust.
- 甚至只在眼睛和目镜之间，拿住一片红色或橙色的胶片，都会提高这片尘云的可见度。
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