a large floating mass of ice detached from a glacier or ice sheet and carried out to sea
冰山。
-
the tip of an (或the )iceberg the small perceptible part of a much larger situation or problem that remains hidden 冰山一角,(巨大隐情或隐患)露头detected fraud is only the tip of the iceberg . 已侦破的欺诈行为只是冰山一角
"late 18th cent.: from Dutch