1.
During the festival, unmarried girls joined a foot race in three age groups.
活动期间，未婚的女孩分成3个年龄组参加赛跑。
2.
Sampling Investigation on Gingival Bleeding and Dental Calculus in three Age Groups in Shandong Province in 2005
2005年山东省3个年龄组人群牙龈出血与牙石检出情况抽样调查
3.
Average age was 29.5,accounting for 3.14‰ among the 21～40 age group.
男3例,女1例。 平均年龄295岁,占21～40岁年龄组的314‰。
4.
Kids from parturition to 180 days of age were divided into ten age groups, each consisted of three male and three female kids.
采用初生至180日龄的羔羊,分十个年龄组.
5.
The average height of the 3-18 years old age group in the urban and rural areas was 3.3 centimeters more than the average of that in 1992.
全国城乡3-18岁儿童青少年各年龄组身高比1992年平均增加3.3厘米。
6.
The objective of this research was to the study effects of soybean-oligosacchrides on micooranism of cecum and content of NH_3 in dejecta of broilers. 198 one-day-old Rose 308 brids were randomly assigned to 6 groups,with 3 replications per group.
选取198只1日龄罗斯308肉仔鸡,随机分为6组,每组3个重复。
7.
However, the newborns in group 3 were inoculated with adsorbed DTP as control at ages of 3,4 and 5 months.
第 3组按 3、4、5月龄接种三联疫苗。
8.
Group 3 kill 10-day and 15-day chicks, their pathological changes are very clear.
试验3组鸡,10日龄、15日龄宰杀时病变很明显。
9.
age-group(also age-bracket)n.(people in a)period of life between two(often specified)ages
某组年龄范围（内的人们）
10.
They divided themselves into three groups according to age.
他们按年龄分成三组。
11.
the division of children into groups according to age
根据孩子们的年龄分组
12.
population by age group
按年龄分组的人口数
13.
sex ratio by age groups
按年龄分组的性比例
14.
40 three years old lamb were randomly divided into four groups.
选用3月龄羔羊40只,随机分为4组。
15.
The positive rate in the age group between 40 to 49 years old was much higher than that in other groups with the positive rate of 4.01%.
不同年龄组中以40～49岁年龄组携带率最高为4.01%;
16.
Her children's ages range from three to eighteen.
她的孩子们的年龄在3岁到18岁之间。
17.
(3) The mean age of onset is about 9.8 years old.
(3)患者平均发病年龄为9.8岁；
18.
Of the190 million working children in the10~14 year age group, three quarters work six days a week or more.
在属于10到14岁年龄组的1.9亿童工中，有3/每周工作6天或更长时间。