一小部分

• 一(first; number one (pictographic))ASSOCIATIVE

A single horizontal stroke symbolizes the number one, the beginning of all things.

• 小(small; tiny)ASSOCIATIVE

Three tiny strokes represent fine grains of sand, conveying the meaning of "small" or "tiny."

• 咅(sound reading (radical/section))PHONETIC
• 阝(village; region)RADICAL

A section of land divided by distinct sounds becomes a region's administrative division.

• 八(divide; separate; eight)ASSOCIATIVE
• 刀(knife; blade; sword)RADICAL

Using a knife to chop something in half represents division or separation.