n.

1. 出生，诞生；分娩[C][U]
   The exact date of his birth is not known.

   他出生的确切日期无人知道。

2. 血统，家世，出身[U]
   He is a man of German birth.

   他是个德国血统的男子。

3. 起源；发生；产生[U]

n.

1. the emergence of a baby or other young from the body of its mother; the start of life as a physically separate being.
2. the beginning of something.
3. a person's ancestry or origin:
   he is of noble birth.

v.