unaided eye例句

This fungus can just be detected by the unaided eye.
这种真菌只用肉眼就能检查出.

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.

That comet is invisible to the unaided eye.
那颗彗星只用肉眼是看不到的.