Scientists believe overexposure to antibiotics helps resistant bacteria become more widespread. 科学家认为,过度接触抗菌素使有抗药性的细菌的传播更广泛。
Spilling over especially from animal feedlots and hospitals, they can lead to strains of bacteria resistant to their effects. 特别是从动物饲料及医院所渗漏出来的抗生素,很可能导致了具抗药性的细菌品种产生。