The new drug lessens the severity of pneumonia episodes.新药减轻了肺炎发作时的痛苦。Polluted water lessens crop yields.受污染的水源会降低农作物产量。Alcohol lessens resistance to diseases.含有酒精的饮料会减弱对疾病的抵抗力....
This is especially important when dealing with the geriatric or debilitated patient.这对老年和虚弱病人尤其重要.Somehow the geriatric Voyager 2, arthritic and partially deaf, managed to reach Neptune.得了关节炎而且局部变聋 、 衰老的“旅行者2号”最后总算抵达海王星....