A monocyte is a white blood cell that can provide immunological defences against many infectious organisms.单核细胞是一种白细胞，可提供针对许多感染性生物的免疫抵抗能力。The victim was able to put up little resistance.受害人没什么抵抗能力。A good diet helps build the body's natural defences.良好的饮食习惯有助于增强身体的自然抵抗能力。Tobacco lowers the body's resistance to disease.烟草会降低人体对疾病的抵抗能力。