您要查找的是不是：
- assortative positive mating 选型(同型)正交配
- He prefers to assort with people of his own age. 他更喜欢与自己的同龄人交往。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- If similar phenotypes(e.g. plants with similar flower shapes and color that attract the same insects) breed together, this a positive assortative mating;it may lead to INBREEDING. 如果相似的表型（具有相似的花形和花色，吸引相同的昆虫的植物）在一起生育，这种正向选型交配可以导致近交。
- 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。
- The first mate was studying to become a master. 大副正在学习准备当船长。
- Her behaviour was a positive outrage. 她的行为残暴到了极点。
- Pandas rarely mate (with each other) in captivity. 猫熊在豢养环境中很少(彼此)交配。
- I'm positive she told us to meet at noon. 我肯定她是告诉我们在中午见面。
- 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 blackbird sat on the nest waiting for the return of her mate. 黑鹂在巢中等候其雄鸟归来。
- This charge is a positive charge. 这个电荷是正电荷。
- 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。
- These TV sets do not assort with the samples. 这些电视机与样品不符。
- She shows a very positive attitude to her work. 她工作态度非常积极。
- The new leader's statement does not assort with some of his Party's principles. 这位新领导人物发表的声明与他所在的政党的一些原则不相称。
- Can you be positive about what you hear? 你对听到的话有把握吗？
- The male hunts for food while his mate guards the nest. 雌性动物守巢时，雄性动物猎食。
