“volcanologist”造句，怎麼用volcanologist造句

“The biggest problem the Indonesians face, ” said a volcanologist, “is getting the local people to believe what the scientists say.”

"This is an unprecedented discovery," said Bruce Marsh, a volcanologist from Johns Hopkins University in Maryland

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.