Complex sentence: Here, the widest river in Bangladesh, the Meghna, joins the Padma, continuing as the Meghna almost in a straight line to the south, ending in the Bay of Bengal.
Split into simpler sentences: Here, the widest river in Bangladesh, Meghna, joins it. The combined stream of the three rivers, with the name Meghna, flows almost in a straight line to the south and ends in the Bay of Bengal.