For another thing, the lens can magnify the image.

另一方面，透镜可以放大图像。

Electron microscopes use magnetic lenses to magnify the image.

电子显微镜使用磁性透镜来放大图像。

If you magnify the image beyond what the telescope can actually resolve, you just get mush.

如果你把图像放大到超出望远镜所能解析的范围，你就只会得到一片模糊。

Fundamentally, there is a limit to how well your telescope resolves two objects, but there's no limit to how much you can magnify the image.

从根本上说，你的望远镜解析两个物体的能力是有限的，但放大图像的能力是无限的。

It consisted of an objective lens on the end closest to the object and an eyepiece at the other end, which magnified the image produced by the objective lens.

它由最靠近物体一端的物镜和另一端的目镜组成，它放大了物镜产生的图像。