Here are a few options:
* 艾比 (Ài bǐ) - This is the most common and straightforward transliteration. It's easy to pronounce and recognize.
* 阿比 (Ā bǐ) - This is another common transliteration, but it's less formal than "艾比".
The best way to choose depends on the context and your preference.
You could also consider using the Chinese character for the meaning of "Abby," if it has a relevant meaning in the context. For example, if "Abby" is short for "Abigail," you could use the character for "beautiful" (美 / měi).
Ultimately, the choice is yours! 😊