[词语]to come down to the bedrock
to get down to the bedrock
[含义]追根究底;山穷水尽
[趣释]【物事喻指】 地质用语“岩床”(bedrock),又称基岩,它是矿坑最底层的坚石。当矿石被采尽时,就露出了坚硬(试读)...