- stiffen
 - ['stifən]
 - vi. 变硬;变猛烈;变粘
vt. 使变硬;使粘稠 
同义词
           
       参考例子
           - 1.The storm was stiffening then.
 - 那会儿,风暴变得越来越猛烈。
 
- 2.This lignification serves to stiffen and strengthen the cells.
 - 木质化足以使细胞变硬和增强。
 
- 3.To stiffen the shells, we added narrow carbon covered foam ribs on the inside.
 - 僵硬的炮弹,我们增加了狭隘的碳泡沫肋骨涵盖在里面。
 
英文解释
           - v.
 - 1.become stiff or stiffer
 - 2.make stiff or stiffer
 - 3.restrict
 
网络释义
               - stiffen
 - 加强; 加劲,加强; 使硬; 变硬;
 
- stiffen flow
 - 粘滞流(动);
 
- stiffen inspection
 - 加强监督;
 
- stiffen syrup
 - 浓糖浆;
 
- Stiffen up that upper lip
 - 坚强些; 咬紧你的嘴唇;