boondoggle
noun [ C ] US informal uk/ˈbuːnˌdɒɡ.əl/ us/ˈbuːnˌdɑː.ɡəl/
（尤指由公众支付费用的）耗资巨大而无意义的工作
an unnecessary and expensive piece of work, especially one that is paid for by the public
The senator called the new highways proposal "a fraud and a boondoggle that the taxpayer should not tolerate." 参议员称新的道路建设提案是“…毫无意义的骗钱工程，纳税人不应该容忍”。