dilemma

n.进退两难

dignify, dignitary, dignity, digraph, digress, digression, digressive, digs, dike, dike (also dyke), diktat, dilapidate, dilapidated, dilapidation, dilate, dilated, dilation, dilatorily, dilatoriness, dilatory, dilettante, dilettantish, dilettantism, diligence, diligent, diligently, dill, dilly, dilly-dally, dilute, diluted, dilution, dim, dim-wit, dim-witted, dime, dimension, dimensional, dimensions, diminish,