verb 下载 🔗分享 变硬，僵硬化。 To make stiff. Examples : "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。 material process 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 变硬，僵硬化. To become stiff. Examples : "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。 body physiology 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 加劲肋, 加强件 An item, material or feature that makes something stiffer. Examples : "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。 material item technical 与AI对话词汇游戏阅读练习
