http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
 
 problem [美 ˈprɑbləm, 英 ˈprɒbləm] 名词
1. problem (difficulty):
problem-solving [ˈprɑːbləmˌsɑːlvɪŋ, ˈprɒbləmˌsɒlvɪŋ] 名词 U
-  marital problems
 -  
 
-  terrestrial problems/aims
 -  
 
-  terrestrial problems/aims
 -