stria of external granular layer

例句：

1. 1. The painting has a beautiful stria pattern.
   这幅画有一个美丽的条纹图案。
2. 2. The old book has faded but still retains its original stria.
   这本旧书虽然已经褪色，但仍保留着原来的条纹。
3. 3. The car's paint is smooth and has no visible stria.
   这辆车的漆面光滑，没有可见的条纹。