A lot of computers, they come with a lot of memory these days, but files are getting bigger and bigger and people generally need to use external hard disks as well.

很多电脑，现在的内存都很大， 但是文件越来越大，人们普遍也需要使用外接硬盘。

Now, if you need to carry files with you from one place to another, but you don't want to carry your external hard disk with all your files, you can just use a thumb drive.

现在，如果您需要随身携带文件从一个地方到另一个地方，但又不想随身携带所有文件的外部硬盘，您可以只使用拇指驱动器。