1. In fact, Bonis thinks calling the Guatemala City chasm a sinkhole is a misnomer & a true sinkhole is an entirely natural phenomenon.
事实上，博尼斯认为把危地马拉城地洞称作天坑并不恰当，因为真正的天坑完全是一种自然现象。
2. Its " north hinders the Yangtse River, southward, the screen cottage charges gripping Anhui Wu under Wuhan, sheds in section of natural chasm on the mound, evidence gushes forth Pu Wei door ".
它北阻长江，南屏庐阜，上控武汉，下扼皖吴，截天堑之中流，据湓浦为门户。
3. By the field survey to the natural gullies, the earth fetching areas, and the excavated slope and chasm for road foundation, we discovered 40 outcrops of the Lintong-Chang'an Fault.
通过大范围自然冲沟、人工取土场、道路开挖边坡和路堑的野外观察，新发现临潼-长安断裂露头40余处。
4. Its " north hinders the Yangtse River, southward, the screen cottage charges gripping Anhui Wu under Wuhan, sheds in section of natural chasm on the mound, evidence gushes forth Pu Wei door ".
它北阻长江，南屏庐阜，上控武汉，下扼皖吴，截天堑之中流，据湓浦为门户。