set in stone片语KK [sɛt ɪn ston] /sɛt ɪn stoʊn/发音片语1一成不变、不可改变、已成定局多用于否定句The schedule is flexible, so nothing is set in stone yet.时间安排还有弹性,所以一切都还没有定案。2确定下来、定案We should set the budget in stone before hiring anyone.我们应该先把预算确定下来,再考虑招人。用这个字练口说→