Flowers or herbs that have strong odors, for instance marigolds and garlic, are known to repel pests and help prevent disease.

鲜花和草药有很强烈的气味，如金盏菊和大蒜，有驱赶害虫预防疾病的功效。

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In 2009, more than 85 per cent of American corn crops were genetically modified to either repel pests or to be tolerant to herbicides used to kill weeds in a cultivated field.

2009年，超过85%的美国玉米为转基因作物，以抵御害虫或不受农田所用除草剂的影响。

youdao

In 2009, more than 85 per cent of American corn crops were genetically modified to either repel pests or to be tolerant to herbicides used to kill weeds in a cultivated field.

2009年，超过85%的美国玉米为转基因作物，以抵御害虫或不受农田所用除草剂的影响。

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