1. 出生；降生；出世
    When a baby is born, you refer to this event as his or her birth .

    e.g. It was the birth of his grandchildren which gave him greatest pleasure...
           孙子孙女的出生给他带来了极大的快乐。
    e.g. She concealed her pregnancy right up to the moment of birth...
           她隐瞒了自己怀孕的事，直到孩子出世。

2. 诞生；产生；出现；起源
    You can refer to the beginning or origin of something as its birth .

    e.g. ...the birth of popular democracy.
           人民民主的诞生

3. 出身；家世；门第
    Some people talk about a person's birth when they are referring to the social position of the person's family.

    e.g. ...men of low birth...
           出身卑微的人
    e.g. His birth, background and career show that you can make it in this country on merit alone.
           他的出身、背景和职业表明，在这个国家仅凭自己的能力就可以取得成功。

4. see also: date of birth;home birth

5. 在血统上；生来
    If, for example, you are French by birth, you are French because your parents are French, or because you were born in France.

birth的意思

    e.g. Sadrudin was an Iranian by birth.
           萨德尔丁是伊朗血统。

6. 生（孩子）；分娩；生育
    When a woman gives birth, she produces a baby from her body.

birth的意思

    e.g. She's just given birth to a baby girl...
           她刚生了一个女孩。
    e.g. She's due to give birth at any moment.
           她随时可能分娩。

7. 使产生；使诞生
    To give birth to something such as an idea means to cause it to start to exist.

    e.g. In 1980, strikes at the Lenin Shipyards gave birth to the Solidarity trade union.
           1980年，列宁造船厂的罢工致使团结工会得以成立。

8. 出生的（地方）
    The country, town, or village of your birth is the place where you were born.