Scientists have made genetic modifications to cotton to increase its resistance to insect pests.

科学家对棉花进行了基因改造，以增强其对害虫的抵抗力。

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The havoc that the "treadmill syndrome" can bring about is well illustrated by what happened to cotton farmers in Central America.

“跑步机综合症”可能带来的浩劫，在中美洲棉农身上已经得到了很好的体现。

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Synthetic fabric is inferior to cotton fabric.

合成纤维织物不如棉织品好。

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Then scientists learned how to put a Bt gene into cotton plants.

VOA: special.2010.05.25

And then he makes some comments about how,well, ; he could never pick cotton fast enough; he's just not able to do it as black men are.

于是他对采棉花进行了一些评价，他觉得自己永远没法采摘的够快;,没法像那些黑人一样迅速。

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And he was sold for $1000.00 to an Alabama cotton planter who came up to Richmond twice a year to buy slaves.

他被以一千美元的价格卖给了一个每年两次,来里士满收购奴隶的亚拉巴马棉花种植主

耶鲁公开课 - 美国内战与重建课程节选

African yields rank dead last in every major crop harvested, from corn to cotton.

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On average, U.S. consumers have seven pairs of jeans in their wardrobe, according to Cotton Incorporated.

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Every major crop around the globe is being stunted, from rice to wheat to cotton to soybeans.

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