Complex sentence: In Arabic, "Bahrayn" is the dual form of "bahr" ("sea "), so"al-Bahrayn " means"the Two Seas" although which two seas were originally intended remains in dispute.
Split into simpler sentences: In Arabic, "Bahrayn" is the dual form of "bahr" ("sea "), so"al-Bahrayn " means"the Two Seas". However, which two seas were originally intended remains in dispute.