essential
Definition
Absolutely necessary; extremely important or basic to something’s existence or function.
中文 绝对必要的；对某物的存在或功能极其重要或基础的。
Example
"Water is essential for human survival."
Absolutely necessary; extremely important or basic to something’s existence or function.
中文 绝对必要的；对某物的存在或功能极其重要或基础的。
"Water is essential for human survival."