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particles, strands, unfold, yarn

Boiling down the specifics of a hard-cooked egg

If you really want to know how to cook a hard-boiled egg, it helps to know something about what's going on inside it.
— Russ Parsons

source: Los Angeles Times

The reason this hard-boiling technique works so well is really pretty simple, but it helps to know a little bit about how eggs work.

Eggs consist largely of proteinmixed with mostly water in the white, or albumen, and mixed with fat and water in the yolk. When the eggs are raw, the proteins are like strands of yarn curled up in little balls. As the eggs are heated, these strands relax and unfold. As they unfold, they bump into each other and link up. (Fun fact: This is why egg "whites," which are clear when raw, are white when cookedthe unfurled, linked-up proteins block light from passing through.)

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 consist第四級[動詞] 組成,構成
 curled第四級curl(使(頭髮)捲曲) 的過去式及過去分詞
 largely第四級large(大的) 的衍生的副詞; [副詞] 大部分;主要地;大量地
 mostly第四級[副詞] 一般地,通常
 protein第四級[名詞] 蛋白質
 proteins第四級protein(蛋白質) 的複數
 strands第五級strand(使擱淺;處於困境) 的第三人稱單數現在式; strand(股;縷;絞;線;繩;串) 的複數
 unfold第六級[動詞] 展開;呈現
 yarn第五級[動詞] 講故事;長談; [名詞] 紗;紗線;冒險故事