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象鼻如何扭曲和旋轉 (How Elephant Trunks Twist and Twirl)
象鼻內的三種肌肉纖維模式共同作用,以提供極高的敏捷性彎曲和扭轉所需的力量、支撐和阻力。
(Three muscle fiber patterns inside trunks work together to provide the strength, support, and resistance needed to bend and twist with extreme agility.)