naked eye
1
肉眼, 肉眼可见的
the human eye unaided by any optical device, used for observing objects and details directly
- The stars are visible to the naked eye on a clear night sky.
在晴朗的夜空中，星星可以用肉眼看到。
- With the naked eye, you can see the texture and color of the fabric.
用肉眼，你可以看到织物的质地和颜色。
- Microorganisms cannot be seen with the naked eye; you need a microscope.
微生物无法用肉眼看到；你需要显微镜。
- He inspected the machinery with the naked eye before using diagnostic tools.
他在使用诊断工具之前用肉眼检查了机器。
- The mountain range stretched out far beyond what could be discerned with the naked eye.
山脉延伸得远远超出了肉眼所能辨别的范围。