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- After entering the society of civilization, the relations of the male and female have evolved from crossbred of mating group to the monogamy. 进入文明社会以后,人类两性关系从群婚杂交演变为一夫一妻制。
- However, for litter size and litter weight at the age of 20d, crossbred Duroc mated groups appeared superior to pure ones. 但在20日龄窝仔数和窝重性状上，杂种公猪优于纯种公猪。
- Do you teach your students singly or in groups? 你教学生是个别地教还是按组教？
- Random mating within a breeding population. 自由交配在一个育种群中自由交配
- The widow mourned for her dead mate. 那寡妇为她已故的丈夫服丧。
- Many animals mate in the spring. 许多动物在春天交配。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- The first mate was studying to become a master. 大副正在学习准备当船长。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
- Pandas rarely mate (with each other) in captivity. 猫熊在豢养环境中很少(彼此)交配。
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- The monkey scratched about in its mate's fur for fleas. 那只猴子在另一只猴子身上找跳蚤。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- The blackbird sat on the nest waiting for the return of her mate. 黑鹂在巢中等候其雄鸟归来。
- The group was made up of doctors. 这个团体是由医生组成的。
- Mating blackbirds will defend their territory against intruders. 黑鹂交配时不容许地盘受到外来的滋扰。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- The male hunts for food while his mate guards the nest. 雌性动物守巢时，雄性动物猎食。
- He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
