1to return sb's gaze; to meet sb's eyes
2to look back (to one's rear)
3(fig.) to look back at (the past); to reflect on
Example
yǒu有shí时wǒ我men们bì必xū须huí wàng回望guò过qù去，cái néng才能kàn qīng看清qián chéng前程。
有时我们必须回望过去，才能看清前程。
Sometimes we need to look back to know where we are going to.