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rag weed的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
名詞 ragweed:
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widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
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any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
