That unblinkingly vivid Japanese sun seems the blazing focus of the glassy ocean's immeasurable burning-glass.

那一眨不眨的生机勃勃的太就是这玻璃般大洋的巨大燃烧的焦点。

Then with his lens he tested the hinges, but they were of solid iron, built firmly into the massive masonry.

随后，他用检查了合叶，可是合叶是铁制的，牢牢地在坚硬的石墙上。

Say we have a lens that has a spherical face on both sides, known as a convex lens.

假设我们有一个具有球面的头 两侧，称为。

You might notice that the image is upside down, which will always be the case for convex lenses.

您可能已经注意到图像是上下颠倒的，总是如此。

While Galileo used a concave lens for his eyepiece, the standard refracting telescope uses a convex, converging lens for both the objective lens and the eyepiece.

伽利略的目使用凹，而标准折射望远的物和目都使用。

This is made possible through something called a lenticular lens – a corrugated sheet in which each ridge is made up of a convex – or outward-curving – lens.

这是通过一种叫做柱状的东西实现的，柱状是一种波纹状的薄板，其每个起处都由（即向外弯曲的）组成。