■ birth

涉及分别的多人时，可以用复数。

• (the study) has been following several thousand twins since their births in 1994 and 1995.（这次调查）追踪了几千名双胞胎，从他们 1994 与 1995 年出生时起（参见 life, death 条）。

• no more...than
• none
• no-nonsense
• north
• northern
• north of
• north 与 northern
• not
• not
• not
• not...because
• no thanks
• nothing
• nothing if not
• notice
• not only but
• not only...but
• not only but also
• not so much as
• not so much...as
• not so much as... 与 not so much... as...
• not to
• not to inf. 与 to not inf.
• not to say
• not without