The first prolonged and impassioned controversy in the Congress involving a pure food issue took place in 1886, pitting the reigning champion, butter, against a challenger, oleomargarine.
国会第一个持续长时间的激烈争论涉及1886年的纯净食品事件：占统治地位的黄油受到了代黄油的挑战。
The first prolonged and impassioned controversy in the Congress involving a pure food issue took place in 1886, pitting the reigning champion, butter, against a challenger, oleomargarine.
国会第一个持续长时间的激烈争论涉及1886年的纯净食品事件：占统治地位的黄油受到了代黄油的挑战。
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