在野外，单亲无法为自己的幼子食物和悉心呵护，所以自然界发明了一雌一雄的配偶。
In the wild, a single parent can't provide both food and constant care for its young, so nature invented pair-bonding - couples.
这对一雌一雄的两只熊猫将会和竹子、苹果和蒸过的玉米面包一起旅行，以让它们更好的适应环境的变化。
The male and female will travel with bamboo, apples and steamed cornbread to ease the adjustment.
长臂猿是6%的终生配偶制灵长类之一(图中一只雌猿正在为雄猿梳理)。
Gibbons are among the 6 percent of primates that mate for life (pictured, a female gibbon grooms a male).
在《创世记》中，上帝命令诺亚建造一艘巨大的船只，带上“每种(动物)……雄的和雌的各一个……陆地上所有用鼻孔呼吸的动物。”
In the Book of Genesis, God commands Noah to built the massive vessel and bring "every sort [of animal]... male and female... everything on the dry land in whose nostrils was the breath of life."
亲爱的游客朋友，荔波不仅有石上森林，还有水上森林，一刚一柔、一雄一雌的阴阳对称在荔波得到了完美展现。
Dear visitors, Libo boasts not only a forest on rocks, but also an overwater forest. They respectively embody strength and tenderness, showing a perfect symmetry of nature in Libo.
他的一个重要的育种手段就是将一只优秀雄鸽与两只杰出的雌鸽相配对，然后将它们的后代相配。
An important aspect of his breeding method was the pairing of an outstanding Cock with two outstanding hens and then to pair the offsprings of the initial matings.
这一结果与雄蛾对活雌蛾提取物的EAG反应基本一致。
The results were same as the EAG response to nature female extraction.
朱鹭中，一只雌鹭一直和2岁的雄朱鹭一起生活，人们对他们的繁殖抱有厚望。
Researchers were hoping that the bird living with a 2-year-old male might breed.
朱鹭中，一只雌鹭一直和2岁的雄朱鹭一起生活，人们对他们的繁殖抱有厚望。
Researchers were hoping that the bird living with a 2-year-old male might breed.
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