不知道怎么的，我忘记把装衣服的手提箱放哪儿了。

Somehow the suitcase with my clothes was misplaced.

《柯林斯英汉双解大词典》

我不知道桶里装的是什么，也从没想过要喝酒。

I didn't know what came in a keg and had never contemplated drinking.

youdao

我若把你所知道的一切来装满自己，那么还有什么空间来装你所不知道的一切呢？

Had I filled myself with all that you know what room should I have for all that you do not know?

youdao