大家有沒有看過童話《金發姑娘和三只熊》呢？迷路了的金發姑娘未經允許就進入了熊的房子，她嘗了三只碗里的粥，試了三把椅子，又在三張床上躺了躺，最后決定小碗里的粥最可口，小椅子坐著最舒服，小床上躺著最愜意，因為那是最適合她的，不大不小剛剛好。金發姑娘選擇事物的原則就叫Goldilocks principle（金發姑娘原則）。

The Goldilocks principle states that something must fall within certain margins, as opposed to reaching extremes. When the effects of the principle are observed, it is known as the Goldilocks effect.

“金發姑娘原則”指出，凡事都必須有度，而不能超越極限。按照這一原則行事產生的效應就稱為“金發姑娘效應”。

The Goldilocks principle is derived from a children's story "The Three Bears" in which a little girl named Goldilocks finds a house owned by three bears. Each bear has their own preference of food and beds. After testing all three examples of both items, Goldilocks determines that one of them is always too much in one extreme (too hot or too large), one is too much in the opposite extreme (too cold or too small), and one is "just right".

“金發姑娘原則”源自童話《金發姑娘和三只熊》的故事。金發姑娘發現了三只熊的房子，每只熊都有自己喜歡的食物和床。在挨個嘗試過三只熊的食物和床后，金發姑娘發現有一個要么太大/太熱，一個要么太小/太涼，只有一個是“剛剛好”。

In astrobiology, the Goldilocks zone refers to the habitable zone around a star. In economics, a Goldilocks economy sustains moderate economic growth and low inflation.

在天文學里，“金發姑娘地帶”指的是一個星球周圍的宜居地帶。在經濟學里，“金發姑娘經濟”指的是維持適度增長和低通脹的經濟。

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口紅效應 lipstick effect

（中國日報網英語點津?丹妮 編輯）

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