Hard to imagine her legs once strong, the bones hard and parting water, clean sharp strokes, not bent and wrinkled like a baby, not drowning under the sticky yellow light.

很难想像她的腿曾经强健。坚韧的骨，劈波分浪，动作干净爽利，没有像婴儿的腿那样蜷曲皱缩，也没有淹滞在黏浊的黄光灯下。

In the body, about 85% of the phosphate is stored in the bones, where it combines with calcium to make a tough compound called hydroxyapatite which is the stuff that makes bones hard.

在人体中，约85%的磷酸盐储存在骨骼中，它在骨骼与钙结合形成一种叫做羟基磷灰石的坚硬化合物，这是为什么骨头比较坚硬的原因。

And if you took the sound out of the scene completely… you wouldn't as easily be able to tell how softened a blocked kick feels… or how bone shatteringly hard a punch feels.

如果你把声音完全从场景中移除，你就无法轻易地分辨出被阻挡的踢腿有多柔，或者一拳有多重。

Lots of different features also help animal ears hit especially high notes, like the extra hard, stiff middle ear bones of toothed whales; like dolphins and sperm whales, which efficiently propagate high-frequency vibrations.

许多不同的特征也有助于动物的耳朵捕捉特别高的音调，比如齿鲸的中耳骨特别坚硬，像海豚和抹香鲸一样，能有效地传导高频振动。