Some improvement in insulating board composition, in shaping process and lining technology can effectively reduce the skin hole.

从中间包绝热板的配方、制造技术和装砌等方面采取改进措施，可有效减少铸坯皮下气泡。

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In any case, it tops sleeping in a hole in the cold ground, a moldy rabbit skin for your pillow, and the grunts and sighs of a dozen changelings anxious in their dreams.

不管怎么说，这好过睡在洞里冷冰冰的地上，拿发霉的兔皮当枕头，还有十来个换生灵在不安的睡梦中咕哝和叹气。

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Laparoscopic, in which needle electrodes within a thin, plastic tube is threaded through a small hole in the skin in a procedure called a laparoscopy.

腹腔镜检查方式——其中电极针通过一个小孔在很细的塑料管进入组织。

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Each hair on a person's head grows from a single tube-like hole in the skin called a follicle.

VOA: special.2011.04.05

He experienced firsthand the impact of humanity on the environment when under the hole in the ozone layer at the South Pole, the harsh ultraviolet rays from the sun burned his skin and permanently changed the color of his eyes.

CNN: The polar explorer searching for green warriors