名詞 bedrock:

1. solid unweathered rock lying beneath surface deposits of soil
2. principles from which other truths can be derived
   同義詞：fundamentals, basics, fundamental principle, basic principle

1. The poor old man has come down to the bedrock.
   那可憐的老人只剩下最后一塊錢了。
2. A foundation; bedrock.
   堅固的基礎; 基本事實

bed.rock

n.（名詞）
The solid rock that underlies loose material, such as soil, sand, clay, or gravel.
基巖：松散地質(zhì)下的大石塊，如土、沙、陶土或碎石

The very basis; the foundation:
基礎；基本原則：
例句：
Ownership of land is the bedrock of democracy.
土地所有權(quán)是民主的基礎

The lowest point:
最低點：
例句：
personal finances that were at bedrock.
最低的個人資金