The bark was stretched over frames made from tree branches, stitched together and sealed with resin—you know that the sticky liquid that comes out of the tree—and when it dries, it's watertight.
树皮在用树枝做好的框架中被拉长、延展，然后缝合在一起并用树脂密封好，就是那些从树中流出的黏黏的液体。当它干了以后就不漏水了。
The paper points out that the factors which influence the bark quantity are soil quality, the position and the shape of the slope, the depth of humus soil, and the content of organic matter.
影响黑荆树皮量主导立地因子有土壤质地、坡位、黑土层厚度、坡形、土壤有机质含量。
They wore loin cloths made out of tree bark, and lived in a timber hut raised five metres above the ground.
他们系着树皮做成的腰带，住在一个离地五米高的小木屋里。
They have also noticed that snakes come out of the ground to freeze to death and that dogs bark a lot, even normally quiet dogs.
他们还注意到，蛇会爬出地穴而冻死，狗会狂吠不已，甚至那些平常很安静的狗也会叫个不停。
Some officers bark out their orders.
有些军官以粗暴的声音发出命令。
Some officers bark out their orders.
有些军官以粗暴的声音发出命令。
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