英语语法分析

The sandal is actually quite uncomfortable unless you're hiding in a bunker and have bigger worries, is the official symbol of the struggle.

这种塑料凉鞋，除非你躲藏在暗堡里担惊受怕，否则穿着不会舒服，但它却是官方战争时代的象征。

This raised the question if the design of a shoe was an evolution of the early sandal and how can new materials and design techniques provide new solutions?

这就提出了一个问题，如果鞋子设计想在早期凉鞋的基础上有所改进，新材料和设计技术如何提供新的解决方案？

He is a bearded, sandal-wearing liberation theologian, a campaigner for the poor and for land reform.

他是个蓄须的、穿凉鞋的自由神学家，是一位为穷人和土地改革而奔走的活动家。