1. 释义：the basic part of something, on which everything depends
2. 例句：
Trust, love, and mutual respect are cornerstones of marriage.
信任、爱和互相尊重是婚姻的基石。
Honesty is the cornerstone of all success, without which nothing would last.
诚信是所有成功的基石，没有诚信，什么都不会长久。
3. 造句：
人工智能技术正在成为日常生活中重要的一部分。
Artificial intelligence is becoming the cornerstone of our daily life.
参考：Artificial intelligence technologies are becoming cornerstones of our daily lives.
努力是成就的基石，没有努力，什么都不会实现。
Constant efforts are cornerstones of all achievements, without which nothing would be attained.
