冰山一般是蓝色到白色，尽管有时因为携带了砾石和小岩石而变成黑色或者不透明。
Icebergs are ordinarily blue to white, although they sometimes appear dark or opaque because they carry gravel and bits of rock.
最常见的空间是那些由松散的、未固结的砂和砾石组成的颗粒（沙粒和小卵石）之间的空间。
The commonest spaces are those among the particles—sand grains and tiny pebbles—of loose, unconsolidated sand and gravel.
从冰山上滚下的一小快砾石积累下来最终可是形成一个巨大的雪球。
A small pebble that is rolled down an icy hill can accumulate into a giant snowball towards the end.
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