crayon

He coloured the picture with crayon.

他用蜡笔给画上色。

They send letters — one time in crayon — detailing their rights and how I am violating some maritime treaty from the 1700s.

他们寄信，有一次甚至是蜡笔写的，详细的描述了他们的权利和我如何违反了某些1700年代的海上条约。