Fortune : ibm was once about mainframes , and then pcs and printers .

《财富》：IBM曾一度以大型机、PC和打印机为主要业务。

The problem , gasman says , is that the lower-end printers aren 't very good .

盖思曼表示，关键问题是，这些低端打印机的质量并不理想。

Commonly , 3d printers lay down successive layers of plastic material to create objects of virtually any shape .

简单来说，3D打印机通过连续不断地叠加塑料材料，几乎可以塑造出任何形状的物体。

Some people already have 3d printers at home .

有些人已在家配置了3d打印机。

Are people always complaining about the printers ?

人们经常抱怨那台打印机么？