Scientists call these bright colors warning colors. You have probably seen animals that have warning colors.
科学家管这些鲜艳的颜色叫做警告颜色。你可能看见一些动物有这种警告颜色。
Warning color
原声例句
历年英语六级听力真题（含译文）
英语专四听力周计划
Scientists call these bright colors warning colors.
科学家称这些鲜艳的颜色为警告色。
探索科学奥秘
Many butterflies that aren't poisonous have warning colors that mimic butterflies that are poisonous.
许多无毒的蝴蝶都有模仿有毒蝴蝶的警告颜色。
探索科学奥秘
Others have colors that will scare away predators either by looking like other animals or having warning colors to let predators know that they're poisonous.
其他动物的颜色可以通过看起来像其他动物来吓跑捕食者，或者通过警告颜色让捕食者知道它们有毒。
英语百科
Aposematism
（重定向自Warning color）
Aposematism (from Greek ἀπό apo away, σ̑ημα sema sign, coined by Edward Bagnall Poulton), perhaps most commonly known in the context of warning coloration, describes a family of antipredator adaptations in which a warning signal is associated with the unprofitability of a prey item to potential predators. Aposematism involves an advertising signal The warning signal may take the form of conspicuous animal coloration, sounds, odours or other perceivable characteristics. Aposematic signals are beneficial for both the predator and prey, since both avoid potential harm.
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