冰山一角

这只是冰山一角

zhè zhǐ shì bīngshān-yìjiǎo

This is just the tip of the iceberg

问题不过是冰山一角

wèntí búguò shì bīngshān-yìjiǎo

The problem is just the tip of the iceberg

已知的只是冰山一角

yǐzhī de zhǐ shì bīngshān-yìjiǎo

What is known is just the tip of the iceberg