每日口說挑戰 我們為什麼打哈欠?

今日挑戰句子

*YAWN* Almost all animals with a spine yawn. Penguins do it as a mating ritual, snakes do it to realign their jaws after a meal and guinea pigs do it to display anger.

(哈欠聲)幾乎所有脊椎動物都會打哈欠。企鵝將它視為一種求偶儀式，蛇在飽餐一頓後藉由打哈欠調整下顎、天竺鼠則藉此表現憤怒。