先决条件

To accumulate or amass over time; a gradual increase in quantity or degree.

To protect against an attack or harmful influence; or the act of protection itself.

To a very high degree; extremely; used to emphasize an adjective or verb.

To be present at an event, such as a meeting, conference, ceremony, or class.

To delay or postpone an event or action to a later time.

To delay or postpone an event, action, or process to a later time.

To possess or own something, often referring to something significant, large, or abstract (like power or talent).

The quality of being useful or suitable for a specific purpose rather than just being attractive or theoretical.

Relating to the first stage or beginning of a process. In academic contexts, it often refers to initial findings or a preliminary stage of a study.

To allow something that one dislikes or disagrees with to exist or occur without interference. It is a key concept in social studies and psychology.