南美海岸上巨砾的奇怪出现令达尔文困惑不已。
Charles Darwin was puzzled by the odd arrangement of boulders on the South American coast.
如果是客人，很可能会说这间房间非常像一个巨砾的内部(尽管已经很多年没有多少客人来过)，而且它的确是经常有很多灰尘。
A visitor might have said the room looked very much like the interior of a large boulder (though visitors had been truly rare for ages) and it did tend to collect dust.
漂砾是由冰川搬运并在距发源地一定距离的地方堆积的巨砾。
Erratics ate boulders transported by glaciers and deposited some distance from their point of origin.
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