因为山区田鼠的大脑中没有催产素和垂体后叶加压素的受体，这些化学物质对于它们没有作用，它们继续着它们的一夜之情。
Because the montane vole does not have receptors for oxytocin or vasopressin in its brain, those chemicals have no effect, and they continue with their one-night stands.
垂体后叶加压素在依恋中也继续着它的角色。
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？”）
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?").
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