氨基甲酸酯类化合物

• 甲(turtle shell; carapace)ASSOCIATIVE

The character depicts a turtle's shell with a crack running through it, symbolizing the hard protective covering.

• 酉(wine vessel; ferment)RADICAL
• 夋(slow manner; leisurely pace)PHONETIC

Fermenting alcohol produces sourness, which is exactly the character for sour.

• 米(grain; cereal)RADICAL
• 大(large; big)ASSOCIATIVE

Sorting rice grains by size from large to small and arranging them into separate groups.

• 亻(person; human)RADICAL
• 匕(spoon; compare)PHONETIC

A person standing upright beside a person bending down shows how shapes transform and change.

• 亼(gather; converge; cover up)ASSOCIATIVE
• 口(mouth; box)RADICAL

A lid sealed tightly over a box's mouth combines into one whole.