"drop a note" in Chinese (Simplified)

留个便条写个小条

Definition

给某人写个简短的信息，通常是非正式的，可以是纸条也可以是电子信息。

属于非正式表达，适用于熟人或者友好的场合。可以指纸质便条或电子消息。不适用于正式信件。

Can you drop a note to let me know when you arrive?

你能**留个便条**告诉我你什么时候到吗？

I will drop a note on your desk before I leave.

我离开前会在你桌上**写个小条**。

Please drop a note if you need anything else.

如果你还需要什么，请**写个便条**。

Just drop me a note whenever you're free and we'll meet up.

你有空时随时**给我写个小条**，我们再约。

If you can't call, just drop a note.

如果你不能打电话，**写个便条**就行。

I totally forgot to drop a note to say I’d be late.

我完全忘记了**留个便条**说明我要迟到。