be basic to用法

The basic vocabulary of a language is those words that must be learnt. 一种语言的基本词... There are certain things that are absolutely basic to the maintenance...

2015年7月15日 - The family is the basic unit of society. 家庭是社会的基本单位.The right to work is a basic right of the citizens. 劳动权是公民的一项基本权利...