Only about five percent of mammals are monogamous.
只有约百分之五的哺乳动物是单一配偶的。
One theory is that bipedality evolved in conjunction with the nuclear family: monogamous parents cooperating to care for their offspring.
有一种理论认为，两足动物的进化与核心家庭有关：一夫一妻制的父母合作照顾他们的后代。
大多数飞禽都是单配性的。
You know, I think he's monogamous with his human.
你知道的，我认为他非常忠于他的人类。
Apparently that monogamous mammalian instinct is weak.
显然哺乳动物的一夫一妻制天性很薄弱。
Males from monogamous species did not show these patterns.
而一夫一妻制物种中的雄性则没有出现这种情况。
Unlike most other fish, they are monogamous and mate for life.
不像其他的鱼类，它们是一夫一妻制并终生厮守。
"Even human beings aren't all that monogamous," Defler said.
即便人类也并非都是一夫一妻。
Some men like being in a monogamous relationship and some don't.
有些男人喜欢一夫一妻制有些则不喜欢，这一点你越早发现越好。
What makes it unusual among mammals is that it is both sociable and monogamous.
在哺乳动物中，它的与众不同之处在于它既是群居性的，也实行一夫一妻制。
Prairie voles live in family groups consisting of a monogamous mated pair and their offspring.
一对单配偶的橙腹田鼠及其子女组成家庭，一起生活。
People tell you who they are all the time. When a man says he can't be monogamous, you should believe him.
人们总是在不停的告诉你他们是怎样的人。如果一个男人一开始就告诉你他不会很专一，你应该相信他。
The data is clear that long-term, monogamous, loving relationships between parents are very good for children.
数据清楚地说明，长期、恩爱、忠贞的夫妻关系对孩子的成长是很好的。
The prairie vole is a sociable creature, one of the only 3% of mammal species that appear to form monogamous relationships.
草原田鼠作为一种社会性生物，它是仅存3%的“一夫一妻制”哺乳动物中的一类。
They're monogamous, and both parents need to spend most of their time foraging. This means less time for elaborate courtship behavior.
同时它们是一夫一妻制的，父母双方都需要花费大量的时间用来寻找食物，这就使得它们没时间去进行花哨的求爱行为。
As the researchers suspected, when all other things were equal mothers in monogamous marriages had most sons: 101 for every 100 daughters.
和研究人员怀疑的一样，在其他条件相同的情况下，一夫一妻制的家庭育有更多的儿子：平均每生出100个女儿，就会生出101个儿子。
The bird is monogamous, the female answers for nest building, hatching and brooding, the male answers for guarding home range and alerting.
该鸟为一夫一妻制，雌鸟担任筑巢、孵卵、育雏任务，雄鸟主要担任保卫领域及警戒任务。
From a purely evolutionary point of view, the guy who's monogamous will have fewer copies of his genes in the next generation than a guy who's not.
从纯进化论的角度来说，一夫一妻制的人，其基因在下一代中被复制的次数更少。
Confucius' filial piety was the reflection of both the patriarchal clan social system and the blood tie between parents and children in monogamous families.
孔子的“孝道”，不仅是宗法社会制度的反映，也是一夫一妻制家庭中父母与子女血缘关系的反映。
But modern genetic techniques have shown that in many species females in apparently monogamous relationships often produce families that have more than one father.
但是现代遗传学技术表明，许多物种的雌性很明显是处于一种单配关系中，但所生育的后代却有着不止一个父亲。
This is because, for a woman, marriage is a declaration to the world that a man regards her as' special 'and intends to have a monogamous relation - ship with her.
这是因为，对女人而言，婚姻意味着向世人宣告这个男人视她为“特别”并打算与她成为夫妻关系。
Vasopressin, an antidiuretic hormone, is another chemical that has been associated with the formation of long-term, monogamous relationships (see "Are We Alone in Love?").
垂体后叶加压素，一种抗利尿激素，又是一种与一夫一妻制的长久关系形成有关的化学物质（见“钟情者只有我们吗？”）
Monogamous relationships don't guarantee absolute safety unless you've both been tested and are HIV-negative.
一夫一妻制不能绝对保证安全，除非你们都检查过身体且HIV都呈阴性。
Monogamous relationships don't guarantee absolute safety unless you've both been tested and are HIV-negative.
一夫一妻制不能绝对保证安全，除非你们都检查过身体且HIV都呈阴性。
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