eka - one; kṛṣṇa-loka - the planet known as Kṛṣṇaloka; haya - there is; tri-vidha-prakāra - in three different divisions; gokula-ākhya - Gokula; mathurā-ākhya - Mathurā; dvārakā-ākhya - Dvārakā; āra - and.

“The planet of Kṛṣṇaloka is divided into three sections — Gokula, Mathurā and Dvārakā.