英语语法分析

These sections of rocks are dissected, using a laser, into slices a millimeter or less thick.

采用激光将这些小岩石块切分成一毫米或更薄的薄片。

It can make fine visual distinctions because it is blessed with one million cones per square millimeter in its retina.

它的视网膜上每平方毫米有一百万个视锥细胞，所以它能分辨出很细微的视觉差别。

Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter.

纳米晶体，也被称为量子点，是一种直径只有百万分之一毫米的半导体粒子。