核试验场

• 木(tree; wood)RADICAL
• 亥(pig (12th zodiac sign))PHONETIC

The kernel of a tree fruit (木) sounds like the character for pig (亥).

• 言(word; speech)RADICAL
• 式(pattern; rule)PHONO-SEMANTIC

A test uses words to check whether something follows the rules correctly.

• 馬(horse)RADICAL
• 僉(all; unanimous)PHONETIC

Testing is like trying out a horse — you must let everyone examine it together to know if it's real or fake.

• 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.