rosin speck

例句：

1. 1.The old painting had a few rosin spots on it.
   这幅旧画上有几处松香斑点。
2. 2. He carefully cleaned the rosin spot off the tablecloth.
   他小心地把桌子上的松香斑点擦掉了。
3. 3. The artist used rosin to create the intricate patterns on the fabric.
   这位艺术家用松脂来在织物上创造出复杂的图案。