toughens 
					英 [ˈtʌfnz ]  
					美 [ˈtʌfnz ]  
					v.  (使)坚硬,坚固; 加强,强化(法律、规定等); 使更坚强; 使坚韧
					
					
					
					
						
							柯林斯词典 
							
								
									
										V-ERG (使)变坚硬;(使)变坚韧toughen  something or if it toughens , you make it stronger so that it will not break easily.
											Do not add salt to beans when cooking as this tends to toughen the skins. …toughened glass.  
										VERB 加强,强化(政策、规章或惩罚);使强硬toughens  its policies, regulations, or punishments, it makes them firmer or stricter.
											Talks are under way to toughen trade restrictions... They have put considerable pressure on the Government to toughen its stance… British regulations are also being toughened. Toughen up  means the same as toughen .The new law toughens up penalties for those that misuse guns.  
										VERB (经历)使坚强,使顽强toughens  you, it makes you stronger and more independent in character.
											They believe that participating in fights toughens boys and shows them how to be men. …people who have been toughened by their daily circumstances. Toughen up  means the same as toughen .He thinks boxing is good for kids, that it toughens them up... My father tried to teach me to toughen up.  
									 
								 
								
							 
							
 
							双语例句 
							
								
									
										They believe that participating in fights toughens boys and shows them how to be men.  
										In new outfits, killed friends weakens morale; in old, it toughens morale.  
										China's top legislature on Thursday adopted an amended water pollution law that toughens punishment of company officials through hefty fines.