However, there were hurdles to overcome yet, the atmosphere of Mars had far less heat-retaining capacity than earth's and almost no oxygen.

然而，仍然有障碍要克服，气氛破坏超过地球、几乎没有氧有远远比较不保有热能力。

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But inside, special windows cut power bills by blocking solar heat in summer and retaining indoor warmth in winter.

但是在室内，特殊的窗户通过在夏天阻挡太阳的热量和在冬天保持室内温暖来减少电费。

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Possibly thicker hair was in itself an advantage, retaining heat in Siberian climates.

可能更厚的头发本身就是一种优势，在西伯利亚的气候中保持住热量。

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Polystyrene foam, sometimes sold under the brand name Styrofoam, has long been popular among restaurateurs for lightweight, heat-retaining containers, but environmentalists complain it takes years to break down in trash.

WSJ: Foam cups, containers eyed amid NYC recycling push