每日背誦第二期78
A similar, but quieter effect can be heard by using an empty cup or even just by cupping a hand over an ear. One popular explanation is that the sound of blood rushing through the ear's blood vessels echoes inside the cup. This is unlikely, because the sound ought to be louder after vigorous exercise, yet it remains at the same level.
把一個(gè)空杯子或只是將手合成杯狀貼近耳朵，就可以聽到類似但比較小的聲音效果。一個(gè)比較普遍的解釋認(rèn)為這是血液在耳朵血管里流動(dòng)的聲音在杯中回蕩不已引起的效果。這說法是不可能的。因?yàn)檎者@樣的解釋，人在劇烈運(yùn)動(dòng)后聽到的聲音應(yīng)該會(huì)更大，但事實(shí)上仍然維持相同的音量。
(短文節(jié)選,本篇始于：貝殼傳來海洋之音)
