“肉眼”的拼音为：ròu yǎn...

这些虫子用肉眼看不见。The worms cannot be seen by the naked eye.这是肉眼胜过雷达的又一事例。It was yet another case where the human eye outperformed radar.整周都可以用肉眼观察到火星。The planet Mars will be visible to the naked eye all week....

“肉眼”的英语可以翻译为：naked eye，unaided eye ...