fall between the cracks
被忽略或被疏漏的情况，通常指某人或某事被系统或组织忽视或漏掉
书面/口语·形容被系统忽视
英文释义
to be overlooked or forgotten
例句
Many homeless people fall between the cracks of the social welfare system.
典故来源
源自物理现象，物体掉入缝隙被忽略，比喻在系统或流程中被遗漏或忽视。