The fundamentals of something are its simplest, most important elements, ideas, or principles, in contrast to more complicated or detailed ones.
例句
...teaching small children the fundamentals of road safety...教給小孩子交通安全的基本規則They agree on fundamentals, like the need for further political reform.他們在需要深化政治改革等基本問題上意見一致。
英英詞典釋義
Noun
1. principles from which other truths can be derived;
"first you must learn the fundamentals""let's get down to basics"