为什么猫总是对的?因为它们总是叫:“妙!妙!”声音是一种能量,它通过空气的运动传入我们的耳朵。猫咪在打呼噜时,通过快速活动喉咙的一部分将声音能量传送到空气中。这种活动叫做振动。你听到的每一种声音都是由于某种物体的振动引起的。这种物体可能是一个表面,一根弦,或是一 Why are cats always right? Because they are always called: “Wonderful! Wonderful!” Sound is an energy that is transmitted to our ears through the movement of air. When snoring, the cat delivers sound energy into the air by moving part of the throat quickly. This activity is called vibration. Every sound you hear is caused by vibrations of some kind of object. This object may be a surface, a string, or one