Some propose storing the CO2 in coal mines or liquid storage in the ocean, Shell favors storing CO2 in deep geological structures such as saline(盐的) formations and exhausted oil and gas fields that exist throughout the world.
出自-2012年6月阅读原文
Yet on these and similar formations in deserts around the world, a few fierce plants have adapted to endure under ever-changing conditions.
2018年6月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
创建;设立;创造
Theformationof something is the starting or creation of it.