1 [sing] a strong base for sth, especially the facts or principles on which it is based 坚实的基础（尤指事实或原则）: The poor suburbs traditionally formed the bedrock of the party's support. 贫困的郊区传统上构成了该党的支持力量的基础。

2 [U] the solid rock in the ground below the soil and sand 基岩；岩床；盘岩 ☞picture at flood plain 见 flood plain 插图