In 1842 a technique of using fingers to feel printed raised dots was invented which allowed blind people to read.

1842年一种用手指感受印刷凸起圆点的技术被发明出来，它使盲人可以进行阅读。

I asked Georgina who invented the system of reading where fingertips are used to feel patterns of printed raised dots.

我之前问乔治娜是谁发明了用手指去感觉突出的点的规律来阅读的体系。

Ah yes. I asked Georgina who invented the system of reading where fingertips are used to feel patterns of printed raised dots.

哦，是的。我问乔治娜是谁发明了这种用指尖来感受印刷凸起圆点的阅读系统。

In the early 1980s, most printing was done on dot matrix printers, which used printed dots to form shapes, the while legible were blocky and imprecise.

在 20 世纪 80 年代早期，大多数打印都是在点阵打印机上完成的，这种打印机使用打印的点来形成形状，而印刷出来的字迹是块状且不精确的。