once these promises
一旦这些承诺
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Since the election of 1896, the only Republican presidential candidates that have won have run on pro-growth, supply-side platforms (whether they delivered on these promises once in office is another matter).
FORBES: Paul Ryan Brilliantly Evokes Clueless Conservatism
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