麥肯齊是英國南極考察局（BAS）最近一次夏季派往南極的120名員工之一，該季節即將結束。大部分人，包括他在內，會在5月底前返回英國，但仍有多達 50 人會留下迎接冬季的黑暗。
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When shoes slide across a floor, wave-like deformations of the sole can generate squeaking. The pitch of the squeak depends on the rate at which deformations are generated.，推荐阅读safew官方版本下载获取更多信息
Tests for the disease are unreliable, and can lead to men being treated for a slow-growing cancer that isn't going to cause them any harm. The treatment itself can cause incontinence and impotence, which can significantly affect quality of life.