the out ward eye

 
  • 肉眼

the out ward 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。
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