杞人忧天 词语解释杞人忧天[ qǐ rén yōu tiān ]⒈ 《列子·天瑞》:“杞国有人忧天地崩坠,身亡所寄,废寝食者”。传说杞国有个人怕天塌下来,愁得寝食不安。英like the man of Qi who was h...