un·nat·u·ral /ˌʌnˈnæʧərəl, ˈnæʧrəl/
 (a.)不自然的,反常的,不近人情的
 Un·nat·u·ral a. Not natural; contrary, or not conforming, to the order of nature; being without natural traits; as, unnatural crimes.
 Syn: -- See Factitious.
 -- Un*nat*u*ral*ly, adv. -- Un*nat*u*ral*ness, n.
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 unnatural
      adj 1: not in accordance with or determined by nature; contrary to
             nature; "an unnatural death"; "the child's unnatural
             interest in death" [ant: natural]
      2: speaking or behaving in an artificial way to make an
         impression [syn: affected] [ant: unaffected]
      3: distorted and unnatural in shape or size; abnormal and
         hideous; "tales of grotesque serpents eight fathoms long
         that churned the seas"; "twisted into monstrous shapes"
         [syn: grotesque, monstrous]