Don't write in pencil, please.

请不要用铅笔写。

youdao

Please write in pencil, not in ink.

请用铅笔写，不要用钢笔写。

youdao

Please write in pencil.

请用铅笔写。

youdao

And, following a test, a lot of people write in pencil: don't try to erase something and bring it back and say that, oh, actually, this is what I had because we look at that and go, this is perfect.

还有，在测试的时候，很多人用铅笔：,不要试图擦掉什么，把它带回,说，事实上，这是我的,因为我们看了一下就走了，这很完美。

麻省理工公开课 - 固态化学导论课程节选

Another tip Miller picked up: Write the names in his organizational chart in pencil, including his own.

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