I didn't know how import you are until left me.

I didn't know how import you are until left me.
I didn't know how import you are until left me.

I didn't know how import you are until left me.
I didn't know how important you are until you left me.
直到你离开我,我才直到你多么重要.

至到你离我而去,我才意识到你对我有多重要.

直到你离开我，我才知道你有多重要

直译 是 直到你离开 我才知道你的重要性
或 当你离开我 我才知道你对我是多么的重要

直到失去你，我才明白你对我是多么的重要.