gān jìng
孩子们都穿得干干净净的。
Háizi men dōu chuān de gāngānjìngjìng de.
The children are all dressed neat and clean.
笔下干净
Bǐ xià gānjìng
Clean writing style / Neat penmanship
办事干净利落。
Bànshì gānjìng lìluò.
Handle matters cleanly and efficiently.