The behaviour of the animals in this situation is a mystery that scientists are finding difficult to unravel.
动物在这种情景下的行为是科学家们难以解释的谜。
To Unravel Mysteries of the Stratages to Branch Countries and Weaken Kingdoms in the Period of Emperior Wen and Emperior Jing
文景时期的分国与削藩探微
Humans exhaust their intelligence and financial resources, and even sacrifice their lives, just to unravel a small part of the mystery of the universe.
人类穷其智慧, 耗尽财力, 甚至牺牲性命, 就想一窥宇宙的奥秘。
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