Large quantities of water may also be stored in limestones when joints and cracks have been enlarged to form cavities.
当接缝和裂缝扩大形成空洞时，大量的水也会被储存在石灰岩中。
2
Its descendants gradually improved the function of their primitive lungs, morphed their lobe fins into legs, and jury-rigged their jaw joints to hear in the air instead of water.
他们的后裔逐渐提升了肺功能，鱼鳍进化为腿，下颌关节突生，以便提高陆地上的听觉。
3
But, no matter how simplistic this design is, you will still have to solder copper pipe joints if you want to tap into your existing hot water system.