难以为继

Explanation: Difficult to continue. 　　Source: "Tan Gong on the Book of Rites," Confucius said, 'Mourning the sad men, and make life difficult following the well. '" Thesaurus:  Banqingbanhuang, temporary shortage Antonym Group:  Show no understanding of the times, Unappreciative Time-varying, Do not know from back, there is no lack of successors, Hold that Nazareth, Rate Zhuo Zhang, follow a set routine