一些人会怀疑公司或员工是否有义务维持这种对话，或怀疑忠诚度和终身合同的概念是否还有什么好处。
Some will doubt whether companies or employees have the commitment to maintain this kind of dialogue, or whether there is still any mileage left in the notion of loyalty and lifetime contracts.
有些人曾假设，还有一些人则怀疑，由于水的重量和密度都更大，融水会切割近1公里的冰层，并向下渗漏。
The meltwater did indeed cut through nearly 1km of ice, as some had hypothesised and others had doubted, forcing its way down thanks to its greater weight and density.
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