在我们学校自行繁殖和驯养的导盲犬有三种： 金毛猎犬， 拉普拉多猎犬和标准贵宾犬。 雄犬和雌犬都可以。

In my guide dog school breeds three kinds of dogs: golden retrievers, Labrador retrievers and standard poodles. We use both male and female dogs.

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自然界中，大多数雄性动物比雌性动物都漂亮，比如雄狮的“鬣”毛、鹿的角和雄孔雀的斑斓羽毛。

In the nature, most male animal ratio pantheress animals are all beautiful, for example the Cape of the "mane" hair, hart and the rich in hues feather of the male peacock of the male lion.

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选择性适应试验表明，蓖麻蚕雄蛾触角的毛形感器中存在两种不同类型的嗅觉感受细胞。

It was demonstrated that there were two types of olfactory receptor cell in one sensillum trichodeum by the selective adaptation.

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