合适

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.

To expect or anticipate something happening in the future based on current evidence.

To put things in order, to arrange systematically, or to tidy up information or physical objects.

A set of circumstances that makes it possible to do something; a favorable time or occasion.

Crucial, key, or extremely important. It refers to the most significant part of a problem or situation.

Of most importance; principal or main. It identifies the primary part of a set of things, ideas, or reasons.

A condition or situation that puts one in an unfavorable or inferior position; a disadvantage. The direct opposite of 优势.

The act or instance of making or becoming different. Highly important for IELTS Writing Task 1 (describing graphs) and Task 2 (social changes).