Do you think pencil lead will wash out of this white shirt?

你认为铅笔痕能从这件白衬衫上洗去吗？

youdao

Layers of graphene make up the graphite found in pencil lead.

铅笔芯里的石墨就是由多层石墨烯组成的。

youdao

A discovery made from pencil lead is promising to change the future of the electronics industry.

科学家一项从铅笔芯中作出的发现，势必将改变电子产业的未来。

youdao

The tiny bones, each about the thickness of pencil lead, were first spotted three years ago by a local caretaker in the outwash from a steep hillside near a well-known fossil site outside Kunming, China.

WSJ: Dinosaur Embryos Point to Rapid Growth

Belonging to a class of worlds known as diamond planets, 55 Cancri e is thought to be rich in the element carbon, which can exist in a variety of structural forms such as graphite (the material used as pencil lead), graphene, or diamond.

BBC: Oddballs: The strange worlds beyond our Solar System

Each day he dotted the virtues he failed to fulfill with a black lead pencil.

FORBES: On The Cover/Top Stories