It's cold on Mars, but during the day it feels like Earth winter. On both the Moon and Mars astronauts would need protection from the temperature.

火星是寒冷的，它的白天就像地球的冬天。月球和火星上的宇航员都需要保护措施。

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Several different protection ways for earth fault are introduced and discussed from earth-fault protection, zero-sequence protection, residual current protection and other aspects.

介绍了接地故障保护的几种不同方式，从接地故障保护、零序电流保护、剩余电流保护等方面进行了论述，指出只有与等电位联结相结合，才能完善保护作。

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The ocean accounts for 70% of the surface of the Earth, but only one percent of their area benefits from protection.

UNESCO: Indigenous Peoples

The 22, 000 heat protection tiles shield the shuttle from the 3, 000-degree Fahrenheit temperatures encountered during reentry into Earth's atmosphere for landing.

CNN: Technicians finish toasting shuttle tiles