míng / zhī / duì / fāng / yǒu / kùn / nan / què / jù / jué / bāng / máng / wèi / miǎn / yǒu / shī / hòu / dao

明知对方有困难却拒绝帮忙，未免有失厚道。

Knowing that the other person is in difficulty but refusing to help is rather ungenerous.