The formations are very unique and is usually be regarded as a disastrous event. Take “eyewall” and storm cloud as example.
它们的形成很独特，通常被视作是悲惨事件，例如“眼墙”和暴风云。
2
A more effective and elegant approach, a specialty of Prof. Assia's, involves penetration of the eyewall to a depth of only about 95 percent, leaving a razor-thin layer intact.
Assia教授的一项专利提供一种更巧妙有效的方法，仅穿透95%的眼球壁，留下极薄的一层完整眼球壁。
3
Maybe you can see the Great Wall clearly from space with binoculars but not with the naked eye.