逆渗透

• 辶(go; step)RADICAL
• 屰(reverse; opposite)PHONETIC

Going against the direction of others is the meaning of the character 逆.

• 氵(water; liquid)RADICAL
• 参(participate; penetrate deeply)PHONO-SEMANTIC

Water gradually seeping deep inside represents the meaning of the character.

• 辶(step; move)RADICAL
• 秀(outstanding; prominent)PHONO-SEMANTIC

Going through everything excellently and standing out is the meaning of the character.