1.
natural ratio of males to females born each year
男女婴每年出生自然比率
2.
There has been a small but consistent decline, of about one per 1,000 births annually, in the proportion of boys being born in industrialized countries over the past 40 years.
在过去40年中，发达国家的男孩出生率一直以每年约千分之一的比率小幅下降。
3.
Male suicide rate and male versus female suicide ratio were curvillineally fitted with age;
男性自杀率和男女自杀比与年龄变化的曲线拟合
4.
the ratio of live births in an area to the population of that area; expressed per 1000 population per year.
出生人口与本地区人口的比率；每年有人出生。
5.
The birthrate in this city is increasing at a ratio of 0.6 to a thousand every year.
这个城市的出生率以每年千分之0．6的比率上升。
6.
A sudden, large increase in the birthrate, especially the one in the United States after World War II from1947 through1961.
婴儿潮出生率突然、幅度的增长，尤指从1947年到1961年二次世界大战后美国的出生率.
7.
Live births rates kept increasing throughout 2006.
2006年婴儿安全出生率持续上升。
8.
The school admits sixty new boys and girls every year.
这所学校每年招收六十名男女新生.
9.
Children sleep more than grown-ups - perhaps fourteen to eighteen hours soon after birth,
孩子的睡眠时间比成年人要长，刚出生的婴儿每天要睡14至18个小时，
10.
For instance, the pupils of women and infants (but not men) spontaneously dilate when they see babies.
比如，女性和婴儿（不是男性）的瞳孔会当在看到婴儿的时候自觉地放大。
11.
"She said: "We did not find that every female doctor had better communication skills than every male doctor, and we wouldn't like to suggest this."
她说:“我们并没有发现每一个女医生都比男医生更有沟通技巧。我们也不想做出这样的暗示。”
12.
Since 1970, the birth rate and natural population growth have both been above the average national level.
1970年以来，西藏的人口出生率、自然增长率均高于全国平均水平。
13.
A numerous medley of men and women, not to mention beasts and vehicles of various sorts, was waiting to issue forth;
等着出城的有一大群各色各样的男男女女，自然还有牲口和车辆。
14.
The Interpretation of Eco-feminism in Charlotte Bronte s Jane Eyre;
男权·女性·自然——《简·爱》中的生态女权主义思想解读
15.
When more males are born than females, there is a population imbalance.
当男性出生得比女性多时，就会造成人口中的男女比例失调。
16.
A Research on the Measures that Guarantee the Sex Ratio at Birth in 2010 Tend to be Normal;
确保2010年出生婴儿性别比趋向正常的对策研究
17.
What sex is the new baby?
新生婴儿是男孩还是女孩？
18.
The baby had been ill since birth and died at the age of three .
那婴儿自从出生后一直有病而在三岁那年夭折。