您要查找的是不是：
- That comet is invisible to the unaided eye. 那颗彗星只用肉眼是看不到的。
- Relating to observations made by the unaided eye. 与用肉眼进行的观察有关的
- Examination of objects with the unaided eye. 宏观检查用肉眼对物体的检查
- You can observe with an unaided eye. 你用肉眼就可以观察得到。
- This fungus can just be detected by the unaided eye. 这种真菌只用肉眼就能检查出。
- Large enough to be perceived or examined by the unaided eye. 肉眼可见的大到可以用肉眼观察或辨别的
- Inclusions in I1 diamonds often are seen to the unaided eye. I1等级的钻石常含有肉眼可见的内含物。
- Barnard's Loop is too faint to be identified with the unaided eye. 巴纳德环太昏暗以致肉眼无法辨认。
- Proxima is indistinguishable as a separate star to the unaided eye. 但肉眼看不见那颗红矮星--比邻星。
- This fungus can just be detected by the unaided eye . 这种真菌只用肉眼就能检查出。
- An optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye. 显微镜用一个透镜或一些透镜的组合来制造小物体的放大形像的视力工具，通常用来观察肉眼看不到的物体
- Orange Peel - A roughened surface that is visible to the unaided eye. 桔皮-可以用肉眼看到的粗糙表面。
- Gross crystalline imperfections like twinning are apparent to the unaided eye. 粗的晶体不完整性，如孪生体可用肉眼看出。
- Saturn is the farthest world that you can easily see with the unaided eye. 木星是我们能用肉眼看到的最远的星星。
- Gross crystalline imperfections like twinning are apparent to the unaided eye . 粗的晶体不完整性，如孪生体可用肉眼看出。
- However, Uranus is barely visible to the unaided eye on a crystal-clear night. 然而，在水晶般透明的夜晚，天王星用肉眼是勉强可见的。
- Too small to be seen by the unaided eye but large enough to be studied under a microscope. 非用显微镜不可见的；微观的用肉眼不可见的但是可以用显微镜观察的
- The cluster contains thousands of stars, of which only a handful are commonly visible to the unaided eye. 星云包含数千颗星星，仅仅是通常肉眼可见的。
- The constellation's nebula is invisible to the unaided eye, but can be resolved with binoculars or small telescopes. 星云用裸眼是看不到的，但是用双筒望远镜或小望远镜就能分解出它。
