1. （尤指经历或观点相同的）一代人，同代人，同辈人
    A generation is all the people in a group or country who are of a similar age, especially when they are considered as having the same experiences or attitudes.

    e.g. ...the younger generation of Party members...
           年轻一代的党员
    e.g. David Mamet has long been considered the leading American playwright of his generation.
           长期以来，戴维·马梅特一直被视为同代人中最杰出的美国剧作家。

2. 代，一代，一辈（通常认为大约是30年）
    A generation is the period of time, usually considered to be about thirty years, that it takes for children to grow up and become adults and have children of their own.

    e.g. Within a generation flight has become the method used by many travellers.
           就在不到一代人的时间里，坐飞机已经成了很多旅行者的出行方式。

3. （机械设备的设计和制造的）代
    You can use generation to refer to a stage of development in the design and manufacture of machines or equipment.

    e.g. ...a new generation of IBM/Apple computers.
           新一代的IBM/苹果电脑

4. （表示家庭成员拥有某国国籍的时间长短情况）第…代的
    Generation is used to indicate how long members of your family have had a particular nationality. For example, second generation means that you were born in the country you live in, but your parents were not.

    e.g. ...second generation Asians in Britain...
           英国的第二代亚洲移民
    e.g. She is a first generation American.
           她是第一代美国移民。

5. （能源的）产生
    Generation is also the production of a form of energy or power from fuel or another source of power such as water.

generation

    e.g. Japan has announced plans for a sharp rise in its nuclear power generation.
           日本宣布了大幅增加核能发电的计划。