step-on-a-crack--break-your-mother-s-back

step-on-a-crack--break-your-mother-s-back什么意思,step-on-a-crack--break-your-mother-s-back翻译

例句

• An old saying goes, "Step on a crack; break your mother"s back. "

  有俗语说：脚把裂缝踩，妈妈背折断。