无抵抗力的

例句：

1. 1.The vaccine is designed to provide strong protection against the virus.
   这种疫苗旨在提供对病毒的强有力保护。
2. 2. The new drug has shown great promise in treating cancer patients.
   这种新药在治疗癌症患者方面显示出巨大潜力。
3. 3. The resistance of the soil to waterlogging is a major factor in determining crop yield.
   土壤对水淹的抗性是决定作物产量的主要因素。