running out of air down here would be fatal. 在这里 耗尽氧气将是致命的
The work may be hazardous in the extreme, 这项工作看起来极度危险
by the morning the vast majority will be back in the safety of the cave. 到了早上 大多数蝙蝠 仍会安然无恙地回到洞中
will certainly be useful later in life in these flooded mangrove forests. 将来会成为在红树林中 非常有用的生活技能
Any cichlid that trenches out will be snapped up. 一旦慈鲷切入电场 立刻就会成为捕食的对象
This lake can be a dangerous place. 马拉维湖也是个危机四伏的地方
but is now believed to be a small mountain bear. 现在已被确认为一种小型山地熊类
Most other bears would be sleeping underground by now, 现在其它大部分熊都已躲在地下睡大觉