Translation of "Doorknob" in Chinese

I turned the doorknob.

我轉動了門把。

She turned the doorknob slowly.

她慢慢转动门把手。

I tried to open the door, and the doorknob came off.

我開門的時候把門柄扭了出來。

- He sighed deeply, and placed his hand on the doorknob.
- Sighing deeply, he grabbed hold of the door handle.
- He let out a deep sigh, and took hold of the door handle.

他深深地叹了口气，将手放在了门把手上。