substance n. 1.物质,材料;【哲学】实体,本体,本质 (opp. appearance)。 2.实质,内容;(故事等的)要旨,要领,大意,梗概。 3.财产,资产,资力。 4.【神学】灵,(三位一体的)体。 5.(织品的)质地。 The substance is usually more important than the form. 内容总是比形式重要。 I can tell you the substance. 我可以讲大意给你听。 a porous substance 多孔体。 a man of substance 资产家,财主。 in substance 实体上,本质上;大体上。 sacrifice the substance for the shadow 只图虚名不求实效,舍本逐末。 waste one's substance, 浪费财产。
This is one of the most common harmful effects that parasites have on their hosts . for example , roundworms and pork tapeworms live in the intestines and rob the body of nutritious substances in the intestines , thus causing malnutrition . 2 mechanical action : parasites can endanger the host through obstruction , compression and direct damage 1夺取营养:寄生虫摄食宿主的营养物质,供其发育繁殖和生存,这是寄生虫对宿主造成最常见的危害之一,如蛔虫和猪肉绦虫寄生在小肠内,夺取肠道内的营养物质,可引起营养不良。