如果雏鸟双亲是根据雏鸟乞食的叫声响亮程度来把食物分给叫声响亮的健康雏鸟的话，那么鸟类双亲就是根据雏鸟乞食声音来决定如何分配食物的。
If parent birds use begging intensity to direct food to healthy offspring capable of vigorous begging, then parents should make food delivery decisions on the basis of their offsprings' calls.
乐器的共鸣箱的上面部分的一种薄板，如小提琴或钢琴中者，用于增大响亮程度。
A thin board forming the upper portion of the resonant chamber in an instrument, such as a violin or piano, and serving to increase resonance.
所以睡的时间越短就意味着得分越低，但是裁判们还会根据选手的原始睡眠姿势，鼾声的响亮程度，以及睡衣的引人注目程度给分。
Sleeping fewer minutes means fewer points but judges also award marks for original sleeping positions, the loudest snore and the most eye-catching outfits.
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