They come into being--somewhere--in faraway, frigid waters, amid thunderous noise and splashing turbulence, which in most cases no one hears or sees.

• 冰山形成于久远的、寒冷的水体中，而且伴随着雷声轰鸣般的嘈杂和水花汹涌的风暴，但却无人耳闻目睹。