verb🔗Share变硬，僵硬化。 To make stiff."The cold weather caused the paintbrush to stiffen, making it difficult to use. "寒冷的天气让画笔变硬了，很难使用。materialprocessChat with AIVocabulary GamePractice Reading
verb🔗Share变硬，僵硬化. To become stiff."After sitting at my desk all day, my back was stiffening. "一整天坐在书桌前，我的背都开始僵硬了。bodyphysiologyChat with AIVocabulary GamePractice Reading
noun🔗Share加劲肋, 加强件 An item, material or feature that makes something stiffer."The stiffening in the cardboard box made it strong enough to hold the fragile vase. "纸箱里的加劲肋使它足够坚固，可以装易碎的花瓶。materialitemtechnicalChat with AIVocabulary GamePractice Reading
