英语语法分析

There are two types: the "obstacle array" and the "path length refractor."

主要有两种类型：障碍型和等长折射型。

You have to wonder if the designers have ever actually been near a working refractor...

你会好奇这个设计者是否真的靠近过一个可以工作的折射镜。

I remember as a child seeing them through my small backyard refractor and it was unmistakable.

我记得小时候用我的小折射镜看它们，是如此的明显。