我也注意到，他似乎停止时间或两个更正黑色钢笔东西。

I did notice that he seemed to stop a time or two to correct something with a black pen.

youdao

她说：“我想说的是，大自然有些东西是用铅笔写的，有些东西是用钢笔写的。”

'What I like to say is that nature writes some things in pencil and some things in pen,' she says.

youdao

用钢笔写下来的东西是无法改变的。这是 DNA。但是用铅笔写下来的东西是可以改变的。

Things written in pen you can't change. That's DNA. But things written in pencil you can.

youdao