unadjusted eye

• 肉眼

unadjusted eye的用法和样例：

例句

1. That comet is invisible to the unaided eye.
   那颗彗星只用肉眼是看不到的。
2. Germs are too small to be seen with a naked eye.
   细菌太小，用肉眼是看不到的。