单词：au fond

中文含义：根本上；最深处；基本原则

英语词性：adverb

美式发音：[oh-fond]

同义词：fundamentally, essentially, at bottom

易混淆单词：profoundly, extensively

双语例句：

1. Au fond, they were a simple people living off the earth and sea.

2. He examined au fond the rocks and plants that lay exposed at the low-water mark.

3. Au fond, she regretted saying what she said.

4. The book explores the nature of creativity and its au fond significance in human life.