粘土沉积分布在古代的火山表面和坑坑洼洼的高原地区，其中一些显然是最近才由于侵蚀而暴露出来的。
The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently.
以前的冰架表面覆盖着积雪，而底层的纯冰这时才露出来。
The surface of an ice shelf gets covered by snow, but the underside is very pure ice.
这个设备能够获取皮肤表面血管的温度信息，它们透露出总体温度和心跳频率的变化。
This captures the heat pattern of blood vessels near the skin, betraying both changes in overall temperature and in heart rate.
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