erasing speed

例句：

1. 1. The computer's erasing speed is very fast.
   这台电脑的擦除速度非常快。
2. 2. The erasing speed of the laser printer is quite high.
   激光打印机的擦除速度相当高。
3. 3. The erasing speed of the eraser is slow.
   橡皮擦的擦除速度很慢。