坐台小姐

• 从(two people together)ASSOCIATIVE
• 土(earth; soil; land)RADICAL

Two people sitting down on the ground together — that is sitting.

• 厶(private; personal)ASSOCIATIVE
• 口(mouth; speech)RADICAL

A platform is where a person uses their mouth to speak privately in front of a crowd.

• 小(small; tiny)ASSOCIATIVE

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

• 女(woman; female)RADICAL
• 且(moreover; furthermore)PHONO-SEMANTIC

An older sister is a woman who stands above and goes before younger siblings in the family.