我刚好在学校学了一点急救知识的翻译：I just learn some first aid knowledge 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I happen to be in school a little first aid knowledge

I just learn some first aid knowledge

I just have studied a first aid knowledge in the school

But I'm just a bit in school aid knowledge

I just learn some first aid knowledge