及物动词

1. (通常指为了避免麻烦和责难而)与…断绝关系，表明与…没有关系
If you dissociate yourself from something or someone, you say or show that you are not connected with them, usually in order to avoid trouble or blame.

2. 把…分开;使分离
If you dissociate one thing from another, you consider the two things as separate from each other, or you separate them.

1. to undergo a reversible or temporary breakdown of a molecule into simpler molecules or atoms

e.g. acids dissociate to give hydrogen ions

2. regard as unconnected

e.g. you must dissociate these two events!
decouple our foreign policy from ideology

Synonym: decouple

3. part
cease or break association with

e.g. She disassociated herself from the organization when she found out the identity of the president

Synonym: disassociatedivorcedisunitedisjoint