Objective: To establish the method of preimplantation genetic diagnosis (PGD) by use of first polar bodies.

前言：目的：建立采用第一极体植入前染色体非整倍体诊断的方法。

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It changes soil, preserves food, inspires polar explorers and gives hope to those in search of resurrection now that bodies can be preserved in liquid nitrogen.

它可以改变土壤状况，保存食物，激励极地探险，给予那些保存在液氮的人们再次复苏的希望。

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Polar Bear Clubs in many northern hemisphere cities near bodies of water, have a tradition of holding organized plunges on New r's Day.

北半球国家里有很多组织类似活动的北极熊俱乐部，它们一般都设在水域边，也有在新年组织北极熊跳的习俗。

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He explained that it was not possible to determine the cause, but that the changes could be linked to the environment - more specifically to pollutants that have built up in the Arctic, and in the polar bears' bodies.

BBC: 'Stress' is shrinking polar bears

Poignantly, the exhibition includes a handful of rocks, part of a 35lb load of geological specimens found on a sledge with the bodies of Scott and two of his polar companions.

BBC: Cardiff's role in Captain Scott's trip to South Pole

It changes soil, preserves food, inspires polar explorers and gives hope to those in search of resurrection now that bodies can be preserved in liquid nitrogen.

ECONOMIST: Low temperatures