Only a thick layer of dust proves that people have not gone for a break. Inside the plane. The cabin. The axis of plane symmetry.

只有这层厚厚的尘土说明工作人员并不只是去短暂休息一下（其实好久没人来了）。

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Assemble drill to break through the first layer of crust, the crew deploys a steel pipe with an 11-inch-wide drill bit at the bottom.

为了突破第一层地壳，船员们使用底部装有11英寸宽的钻头的钢管。

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The human body regrows its outer layer of skin every two to four weeks, and bits and pieces of the old skin break off - to become dust.

人体皮肤外层每2至4周更新一次。老化的皮肤将会脱落，成为灰尘的一部分。

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Above-freezing temperatures also led to overflow along the trail, a potentially dangerous situation where water has pushed up through the ice and refrozen, creating a weak top layer of ice that teams and mushers can break through.

NPR: 53-Year-Old Musher Becomes Oldest Iditarod Champ