1、孤久则安的相关成语是：孤阴则不生，独阳则不长、久久不忘、分久必合，合久必分。2、拼音是：gū jiǔ zé ān。3、词语解释是：既来之，则安之jìláizhī,zéānzhī[sincewearehere,wemayaswellstayandmakethebestofit;nowthatwehavecome,letusstayandtaketheroughwiththesmooth;nowyouarehere,you'dbetterstay;sincethisisso,it'sbettertoacceptitandenjoyit]既已来此,那就随安于此他果然既来之,则安之,我也只得因居之安,则资之深。——《儿女英雄传》。4、基础解释是：既来之，则安之jìláizhī,zéānzhī[sincewearehere,wemayaswellstayandmakethebestofit;nowthatwehavecome,letusstayandtaketheroughwiththesmooth;nowyouarehere,you/'dbetterstay;sincethisisso,it/'sbettertoacceptitandenjoyit]既已来此,那就随安于此他果然既来之,则安之,我也只得因居之安,则资之深。——《儿女英雄传》。