学术雅思（5 级及以下） - 复杂

difficult to understand, deal with, or explain due to having many parts or factors

复杂的

not easy to understand or analyze

复杂的

not clear or easily understood

混乱的

needing a lot of work or skill to do, understand, or deal with

困难的

hard to understand or explain

费解的

not involving difficulty in doing or understanding

简单的

needing little skill or effort to do or understand

简单的

easy to comprehend or perform without any difficulties

简单的

clear and easy to understand

简单的

having or offering the simplest elements or level of understanding or functionality

基本的

not difficult to understand

基本的

noticeable and easily understood

明显的

easy to understand

清晰的

easy to comprehend

易于理解

clear in meaning or expression

可理解的

clear enough to be easily understood

透明的