Folds of skin cover their eyes and ears to prevent water from entering, and the nostrils close with a watertight seal.

皮肤的皱褶盖住它们的眼睛和耳朵，防止进水，它们的鼻子内有可关闭的防水封垫。

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The researchers scored five distinct mouse pain expressions. Eyes close and squint, nose bulges, cheeks bulge and mice also pull back their little round ears and move their whiskers.

研究者们找出了老鼠五种明显不同的痛苦表情：眼睛紧闭或斜视、鼻子鼓胀、面颊凸出、耳朵向后伸、胡须抖动。

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That's a strange metaphor - their eyes would glaze over and their ears would close up.

NPR: The Math Behind Pellicano's Code

It was music to the ears of people long accustomed to hearing gun shots close to their doors.

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