1. 集体的;共同的
    Collective actions, situations, or feelings involve or are shared by every member of a group of people.

    e.g. It was a collective decision...
           这是集体的决定。
    e.g. The country's politicians are already heaving a collective sigh of relief.
           该国的政界人士均已松了口气。

2. 总的;集合的
    A collective amount of something is the total obtained by adding together the amounts that each person or thing in a group has.

    e.g. Their collective volume wasn't very large.
           他们的总量不是太大。

3. 集合的;总括的
    The collective term for two or more types of thing is a general word or expression which refers to all of them.

    e.g. Social science is a collective name, covering a series of individual sciences.
           社会科学是一个统称，涵盖一系列的独立学科。

4. 集体企业;合作农场
    A collective is a business or farm which is run, and often owned, by a group of people who take an equal share of any profits.

collective

    e.g. He will see that he is participating in all the decisions of the collective.
           他会确保自己参与集体企业的各项决策。