The wearer stares at a computer screen, which flashes highlights over different rows in a matrix of letters and symbols set up like a keyboard on the screen.
戴头盔的人会盯着电脑屏幕，它会反射由不同的字母和符号组成的矩阵行的高光位，这就像屏幕上的键盘一样。
2
It runs on a variety of computer systems and is especially good at arithmetic involving arbitrary-length integers and fractions, graphics, and matrix and polynomial algebra.
它在各种各样的计算机系统上运行，尤其擅长于涉及任意长度整数和小数、图、矩阵和多项式代数的算术。
3
The plot supposes that humans live in vats many years in the future, being fed false sensory information by a giant virtual reality computer (the Matrix).