That doesn't compare with Amazon's Kindle, which has a monochrome E-Ink screen that can run for a month on a charge.

当然我也没拿iPad跟亚马逊金读相比，后者特有的黑白电纸书屏在充电后可以用一个月。

youdao

So instead, the team devised a way to coat the conducting nanotubes in a polymer to protect the electric charge and allow the ink to be purely semiconducting.

所以，研究组成员想出了一个办法，将导电纳米管覆在一聚合体上，这样不仅可以保护电荷，而且还能使油墨完全呈半导体性质。

youdao

A positive charge applied on the top surface of the ink will allow the white to show, making the surface as white as a sheet of paper.

加上墨水表面上方的正电荷将使白色显现出来，使表面像一张纸那样白。

youdao

The Pebble has an e-ink display similar to those found on e-readers, and last seven days on one battery charge.

BBC: Pebble smartwatch set to ship to project backers

Some citizens alleged that the ink applied to a voter's index finger to safeguard against repeat voting could be scrubbed off, a charge the Election Commission denied.

WSJ: Malaysians Turn Out in Record Numbers in Tight, Historic Election