单词	tip of the iceberg
释义	tip of the iceberg noun phrase : the earliest, most obvious, or most superficial manifestation of some phenomenon Word History Etymology from an iceberg being mostly submerged First Known Use 1969, in the meaning defined above
随便看	pneumococci pneumococcus pneumoconioses pneumoconiosis Pneumocystis carinii pneumonia pneumocystises pneumocystoses pneumocystosises pneumocystosisses pneumodynamic pneumogastric pneumogastrics pneumograph pneumographs pneumon- pneumonectomies pneumonectomy pneumonia pneumonias pneumonic pneumonics pneumonitides pneumonitis pneumono- pneumonoconioses

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