harden
                                                    英 ['hɑːd(ə)n]
                                                                        美 ['hɑrdn]
                        
                
                
                
                    
                        - vi. 变硬,变坚固;变坚强;变冷酷
- vt. 使…变硬;使…坚强;使…冷酷;使…麻木不仁
- n. (Harden)人名;(英、德、罗、瑞典)哈登;(法)阿尔当
 
                
                    
                                    
                
                                                                                        harden 中文词源
                
                
                    harden 使变硬来自hard,硬的,-en,使。
                 
                                                harden 英文词源
                
                
                    
                        - harden (n.)
- c. 1200, transitive, "make (something) hard," from hard (adj.) + -en (1). Intransitive meaning "to become hard" is late 14c. The earlier verb was simply hard, from Old English heardian. Related: Hardened; hardening.
 
                
                                                    harden 双语例句
                
                
                    1. Give the cardboard two or three coats of varnish to harden it.  在纸板上涂两三层清漆使其变硬。 来自柯林斯例句
 - 2. Their action can only serve to harden the attitude of landowners. 
- 他们的行动只会让土地拥有者的态度变得更坚定。
来自柯林斯例句
 
- 3. The varnish takes a few hours to harden. 
- 清漆需要几个小时才能干透。
来自《权威词典》
 
- 4. Hot steel is quenched to harden it. 
- 烧热的钢放入水中骤冷使之坚硬.
来自《简明英汉词典》
 
- 5. Test to see if the finish is tacky, and if it is, leave it to harden. 
- 看看最后一道漆干了没有,要是没干,就先让它干透。
来自柯林斯例句