在赫托遗址发现的石制工具虽代表了相当精良的制作工艺，但它们与10万年前更原始或更近代时期的工具相比，并没有太多的不同之处。

The stone tools found at Herto represent a fairly sophisticated technology—but they are not that much different from tools 100, 000 years older or, for that matter, 100, 000 years younger.

youdao

玻璃的起源可以追溯到公元前3500年，但直到2000年前的罗马帝国，吹制玻璃的艺术和玻璃的实际使用才变得更加广泛。

The origins of glass date back to 3,500 BC but it wasn't until the Roman Empire, 2,000 years ago, that the art of glass-blowing and the practical uses of glass became more widespread.

youdao

最早的陶瓷制品是在制陶的温度下烧制的，但是早在公元前15世纪，（人们）已经用高温烧制表面上釉的炻器。

The earliest ceramics were fired to earthenware temperatures, but as early as the fifteenth century B.C., high-temperature stonewares were being made with glazed surfaces.

youdao