불가결하다

To estimate, judge, or gauge a situation, distance, or amount based on certain standards or intuition.

Lasting or intended to last or remain unchanged forever. Often used in contrast with 'temporary'.

The state of being mutually connected or related. It emphasizes how multiple factors influence each other.

Growing or developing naturally without outside help or influence. It refers to something that originates from within a specific environment or system spontaneously.

Playing a central, pivotal, or most important role in a system, organization, or process.

To organize, consolidate, repair, or refurbish a system, law, or equipment to make it function properly and efficiently.

To increase and complete something that is insufficient, typically referring to facilities, equipment, or manpower. It implies not just increasing but filling up a required capacity.

The act of establishing something firmly, such as a system, theory, authority, or order. It implies making something stable and certain.

The act or process of organizing parts into a structured whole. It refers to giving a systematic arrangement to information, data, or a system.

To be very frequent or common; occurring time and again. It is often used to describe social phenomena or mistakes that happen often.