Professor hou ming , of beijing university , is a volcanologist who has been warning for years that the world has not seen the worst nature can do 北京大学的火山专家侯明教授多年来一直警告人们自然对人类的最大灾难还没有降临。
2.
Sensors on the slopes of the two mountains - - anak krakatoa on the southern tip of sumatra and tangkuban prahu in java - - picked up an increase in volcanic activity and a buildup of gases , government volcanologist syamsul rizal said on wednesday 印尼火山学家上周三说，安放在苏门答腊岛南端的喀拉喀托火山和爪哇岛上的唐库班珀拉胡火山山坡上的传感器检测到这两座火山的活动在加剧，而且气体也在积聚。
3.
Sensors on the slopes of the two mountains - anak krakatoa on the southern tip of sumatra and tangkuban prahu in java - picked up an increase in volcanic activity and a buildup of gases , government volcanologist syamsul rizal said on wednesday . on tuesday , mount talang , also on sumatra , sent clouds of gas high into the air 印尼火山学家上周三说，安放在苏门答腊岛南端的喀拉喀托火山和爪哇岛上的唐库班珀拉胡火山山坡上的传感器检测到这两座火山的活动在加剧，而且气体也在积聚。
