在传统仪式上，他们系上彩色丝带象征不同的等级。

During the traditional ceremony, they tied colorful ___ribbons to symbolize different ranks.

这个沿海地区因其温暖的气候和美丽的海滩而闻名。

This coastal ___zone is famous for its warm climate and beautiful beaches.

视网膜的神经纤维层由多个带状结构组成。

The nerve fiber layer of the retina consists of several ___zonal structures.