重点讲解：
1. be associated with
与……有关；与……有联系；
eg. I haven't been associated with the project over the last year...
我去年一直没有参与那个项目。
eg. Many of the problems associated with such food sources may be eliminated.
许多与这种食物源有关的问题便迎刃而解了。
2. be related to
与……有关；
eg. The occurrence of the disease is apparently related to standards of hygiene.
这种病的发生率显然与卫生状况相关。
eg. He claims to be distantly related to the British royal family.
他声称自己与英国王室是远亲。
3. distinguish from
区分；辨别；分清；
eg. There is something about music that distinguishes it from all other art forms.
音乐的某种特质使其有别于所有其他艺术形式。
eg. Speeches distinguish human beings from animals.
人类和动物的区别在于人会说话。