I put aside half an hour every day to write my diary.

我每天留出半个小时写日记。

《牛津词典》

Let me just get my diary.

让我拿一下我的日记。

youdao

I'll look in my diary and see what you had last time.

我会看看我的日记本，看你上次吃了什么。

youdao

When I left the hospital with Corwin, I took my purse and my diary and nothing else.

NEWYORKER: The Reptile Garden

So, here is my diary, written from the "frontline" where heroic deeds are performed in classrooms every day by dedicated teachers.

BBC: children entering a school

All I thought was, How shall I describe this in my diary?

NEWYORKER: The Reptile Garden