ภาษาอังกฤษวันละคำ : tip of the iceberg

The expression tip of the iceberg refers to a small part of something much larger, like the top of a iceberg (a floating piece of ice) which is mostly under water. ...

• Prominent economists are warning that the recent layoffs are only the tip of the iceberg.
• The Klity tragedy represents the tip of the iceberg of man-made pollution problems.
• In most museums, the exhibits are just a tip of the iceberg with a good majority of space used for restoration work and just safe keeping.
• "Several local brokers or recruiters, living in Cambodia, have already been detained," according to Mr Lim, but this is only the tip of the iceberg. ...

(From Bangkok Post)