黄河细得象条衣带，泰山小得象块磨刀石。比喻时间久远，任何动荡也决不变心。

西汉 司马迁《史记 高祖功臣侯者年表序》：“封爵之誓曰：‘使河如带，泰山若厉。国以永宁，爰及苗裔。’”

主谓式；作谓语；比喻时间久远

李光《河山》诗：“河山带砺等闲封，惭愧旗常负鼎钟。”

Even the Huanghe River becomes as thin as a stripe and Mount Tai becomes as small as a grindstone.