plaintive相关的词根或词缀是: plaint

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Whiffs of panic and plaintive cries for more intervention from the federal reserve underscored the market 's suddenly fragile sentiment on thursday .

几波恐慌以及迫切要求美联储（federalreserve）加强干预的哀号凸显了周四市场突然出现的脆弱情绪。