An mod spokesman said it would be used " primarily in the loud hailer mode " .
一位国防部发言人说这种装备“主要使用它的高音信号模式”。
" Previous studies suggested that polar bears would have had to be evolving very rapidly , since they were so young , " says hailer .
海勒说“之前的研究表明北极熊不得不进化的很快，因为它们是一个年轻的物种。”
" If they go extinct in this phase of warming , we 're going to have to ask ourselves what our role in that process was , " says hailer .
“如果它们在气候变暖过程中灭绝，我们应当问问自己，人类在这个过程中扮演了什么角色”，海勒说道。
But after studying dna from inside the cell nucleus , using samples from 19 polar and 18 brown bears , frank hailer of germany 's biodiversity and climate research centre and colleagues reached a very different conclusion .
