冷却塔

• 冫(ice; cold)RADICAL
• 令(command; order)PHONO-SEMANTIC

A command from ice and snow emanates to make everything cold and desolate.

• 去(leave; depart)ASSOCIATIVE
• 卩(seal; person kneeling)RADICAL

A person kneeling to bid farewell to someone leaving symbolizes stepping back and refusing.

• 土(earth; soil; land)RADICAL
• 荅(small grass; herb (for sound))PHONETIC

A tower is built from earth and stone, with a sound close to the character for answer.