You could limit distractions by reading only physical books, or on single-purpose e-readers.

你可以通过只阅读实体书或单一用途的电子阅读器来减少分心。

youdao

The Kindle is too expensive for a single-purpose device.

对于一个用途单一的设备来说，Kindle价格过高。

youdao

Especially for enterprise customers, we don't normally recommend many apps that are so single-purpose.

我们通常不推荐如此用途单一的软件，特别是对于企业用户。

youdao

By contrast, few makers of single-purpose devices seem to understand that less is more.

WSJ: Are Multipurpose Devices Better Than Products That Perform One Function?

Bloggers began predicting the imminent demise of Flip, along with single-purpose video cameras in general.

FORBES: Cisco's Flip Camera Still Thriving Despite Apple Assault

Three weeks from now this will become the largest city on earth, the largest single-purpose gathering of humanity in history.

FORBES: Why a Harvard Finance Instructor Went to the Kumbh Mela