" People have hypothesized about it in the past , " said researcher roberta hamme of the university of victoria , regarding the possibility that volcanoes can have such an effect on iron-poor seas .

“人们已在过去假设它，”维多利亚大学研究员罗伯塔哈梅说，认为火山在缺铁的海洋可以有这样的影响的可能性。