满腔热忱

• 氵(water; liquid)RADICAL
• 艹(grass; plant)ASSOCIATIVE
• 两(sea; ocean)PHONETIC

Water rising high to the grass tips means it is full and overflowing.

• ⺼(flesh; body)RADICAL
• 空(empty; hollow)PHONO-SEMANTIC

The body's cavity is the flesh that wraps around the hollow empty space inside.

• 执(hold; grasp)PHONETIC
• 灬(fire)RADICAL

Fire rising up from below an object being held creates a burning heat.