The things we've had in cameras for several years by putting gigabytes, soon hopefully terabytes of storage on a device that has no moving parts.

几年来我们可以在相机的存储设备,里存入千兆字节，甚至不久以后可以存入兆兆字节,设备里没有移动部件。

哈佛公开课 - 计算机科学课程节选

Generally, the feature is that they are much faster because they have no moving parts.

一般来说，这些设备存取速度更快,因为它们没有移动部件。

哈佛公开课 - 计算机科学课程节选