I mean, from the bronze age up to titanium alloy steel you had all this amazing progress, and since then — nothing.

我是说，从青铜时代到钛合金钢，人类取得了巨大的进步，可是从那以后呢？ ---再没有了。

youdao

We have a variety of frames, such as Titanium, gold, silver, bronze and so on.

咱们有各类各样的镜架，好比钛、金、银、古铜等等。

youdao

We have a variety of frames, such as Titanium, gold, silver, bronze and so on.

咱们有各类各样的镜架，好比钛、金、银、古铜等等。

youdao