pass over, cross, traverse
淩 centers on moving across or over something: passing over, crossing, or traversing a space or obstacle.
淩 combines 氵 (water) with 夌, which likely contributes the sound and the idea of rising or going over. The character suggests crossing over water.
Water 氵 on the left and 夌 (a shape associated with rising or going over) on the right: imagine a boat passing over waves, crossing from one side to the other.
For リョウ, picture a rowboat crossing a lake: row -> リョウ, and the boat traverses the water.