It 's the first definitive link between a volcano and extinction .
这是第一次在火山和生物灭绝之间建立确定的联系。
The new study helps , but is by no means definitive , she said .
她还说道,这项研究很有帮助,但绝非能起到决定性的作用。
Bombardier has said that while no definitive agreements have been made yet , the plans are progressing .
庞巴迪已经表示虽然目前没有决定性的合同签署,但相关计划正在筹备中。
A definitive statistical answer to the relative perils of home and hospital births is unlikely .
要对家里生产和医院生产的相对风险给出一个决定性的统计学答案不太可能。
But he acknowledges that it cannot be definitive ; too much depends on probability .
但是,他承认由于数据获得基于概率统计,因此不能作为确定依据。
But lack of definitive fossil evidence has many guessing whether this primate was really a biped-and just where she might fit on the human family tree .