B2 involving a lot of different but related parts由许多相关的不同部分组成的;构造复杂的
B2 difficult to understand or find an answer to because of having many different parts难懂的,费解的;错综复杂的
More examples
I find it hard to get my mind round such complex issues.
The structure of this protein is particularly complex.
It is a simple melody with complex harmonies.
The writer has used several complex grammatical constructions.
She always manages to cut through the complex theory and get at the facts.
C1 a large building with various connected rooms or a related group of buildings综合大楼;建筑群
More examples
They're planning to develop the whole site into a shopping complex.
The hotel complex was a honeycomb of rooms and courtyards .
The Council plans to knock the library down and replace it with a hotel complex.
The office complex has an on-site nursery.
They're building a new sports complex on the waterside.
C2 a particular anxiety or unconscious fear that a person has, especially as a result of an unpleasant experience that they have had in the past or because they have a low opinion of their own worth(尤指由过去的不快经历或自我评价不高造成的)情结,心理负担,病态心理
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