[Derek] They work kind of like dot matrix printers.

- [Derek] 它们的工作原理有点像点阵打印机。

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。

The walkman, the floppy disks, the dot matrix printer and the VHS, the video home system, these are some of the inventions of the 1970s that have become obsolete with the passage of time and the progress of technology.

随身听、软盘、点阵打印机和 VHS、家庭视频系统，这些都是 1970 年代的一些发明，但随着时间的推移和技术的进步已经过时了。