You tell me what happened and I'll jot down notes.

你告诉我发生了什么事，我来做笔记。

youdao

When reading, don't just trust to your memory, but jot down notes in your notebook.

看书时不要单纯依靠记忆力，要在笔记本上记些笔记。

youdao

Often we can't type fast enough on our mobile devices to keep up, so we jot down notes on *gasp* paper.

通常，我们在移动设备上的打字速度都不是很快，有些跟不上，因此我们用“速记”纸（*gasp* paper）快速记下来。

youdao

You can jot down notes or sketch in it.

WSJ: Samsung's New Galaxy Note 10.1 Tablet Imitates Pen and Paper - Mossberg Review

The stylus is a big plus, at least for users who like to jot down notes, create sketches or annotate documents in a way that's much more precise than using a fingertip.

WSJ: Personal Technology: A Mobile Device That's Better for a Jotter Than a Talker

The tiny device used a simplified form of handwriting recognition to let busy executives jot down important notes and telephone numbers.

FORBES: Sub-Windows