Most older antimalarials have been rendered useless by drug resistance.
耐药性已使多数较陈旧的抗疟药物失去效用。
Unlike previous antimalarials that have been rendered useless in many regions due to drug resistance, Artemisinin Combination Therapies (ACTs) are now recommended.
与在许多地区由于耐药性而无效的以前各种抗疟药不同，目前推荐使用以菁蒿素为基础的联合治疗药物。
Insect resistance to Bt would do irreparable harm, not just to genetically modified crops, but to organic crops as well, because Bt sprays would be rendered useless.
而Bt抗性也会产生不可取代的危害，不仅是对于基因改良作物，还有那些需要用Bt喷雾来抗虫的作物。
Insect resistance to Bt would do irreparable harm, not just to genetically modified crops, but to organic crops as well, because Bt sprays would be rendered useless.
而Bt抗性也会产生不可取代的危害，不仅是对于基因改良作物，还有那些需要用Bt喷雾来抗虫的作物。
应用推荐