"I'm fine, how old are you, and where is your home?"
Let's break it down:
* 我很好 (wǒ hěn hǎo): I'm fine
* 你多大年纪了 (nǐ duō dà niánjì le): How old are you?
* 你的家在哪儿 (nǐ de jiā zài nǎr): Where is your home?
This is a typical way to start a conversation in Chinese, asking about someone's well-being and age.