As we crawled forward, military-style, with the ceiling getting ever lower, we finally got to a point where the ceiling was so low that my husband and project photographer, Dylan, could no longer achieve focus on the ceiling with his DSLR camera.
我们在洞中匍匐前进， 洞顶越压越低， 到最后，洞顶太低了， 我的丈夫兼摄影师戴伦 甚至无法用单反相机聚焦洞顶。