延长性的英文：
malleability

You need a malleable pillow that will mould to the curves of your neck.
你需要一个柔韧性好、能与你的颈椎弯曲弧度相吻合的枕头。

Such adjustments imply an essentially passive and malleable family structure
这样的调整意味着一种实质上是被动的和富有弹性的家庭结构。

Malleable cast iron pipe fittings--Type size--Through thread male joint (sockets)
GB/T3289.29-1982可锻铸铁管路连接件型式尺寸通丝外接头

Softer materials, such as brass, are more easily damaged, yet are also more malleable, so they can actually deform to minimize imperfections.
较软的材料，如黄铜，更容易受到损伤，但是也更有延展性，因此它们实际上可以通过变形来最大限度减少缺陷。