Problems with using agricultural pesticides in the production of a secure food supply has led to the world-wide problem of weed populations developing resistance to herbicides used for their control.

在安全食品方面使用农药的问题导致了世界范围内的如杂草种群抗药性以及除草剂的使用等广泛问题。

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Two of the plants growing in the wild showed resistance to both kinds of weed killers.

VOA: special.2010.09.14

"We really need to get after this weed resistance problem right away before we lose the efficacy of that technology."

VOA: standard.2010.04.15

There are two major traits among these GE crops: resistance to certain insect pests, and resistance to a weed-killer called glyphosate.

VOA: standard.2010.04.15