unaided造句

There have been at least thirteen previous attempts to reach the North Pole unaided.
之前至少已经有过13次想独立到达北极的尝试。

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.

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

• #unaided