网球场

• 糹(silk thread; filament)RADICAL
• 罔(net; without)PHONO-SEMANTIC

Silk threads woven together form a net to catch fish, just like a network that spreads everywhere.

• 王(jade)RADICAL
• 求(seek; request)PHONO-SEMANTIC

A round ball rolls like a pearl across the ground.

• 土(earth; soil; land)RADICAL
• 勿(don't; must not)PHONETIC

A wide field of land sounds similar to the word for things or objects.