Definition: thin or made of very small pieces Level: C2
修复师轻轻拂去数十年积聚的细尘，以露出画作原本的色彩。
The conservator gently brushed away a layer of ___fine dust that had accumulated over decades to reveal the painting's original colours beneath.
她有一头细密的棕色头发。
She has ___fine, brown hair.
孢子被磨成了细小的颗粒。
The spores were ground into ___fine particles.
