The stiffening of muscles in Susan's right arm became worse.苏珊右臂肌肉的硬化加剧了。

For the stiffening, use either buckram or a modern self-adhesive stiffener.至于硬衬, 可以用硬麻布或新式的自粘衬布。

Using the pattern, cut out one piece of pelmet stiffening.按照这个图样剪出一块帷幔硬衬。