对于一个已经缺铁的女性,任何因锻炼导致的更多铁质流失都足以使其体内缺铁状况恶化.这句的结构并不复杂,分析如下:
主语:any additional iron loss from exercise;
谓语:may be;
表语:enough ;
不定式:to tip her over the edge into a more serious deficiency;
状语:for a woman who already has a poor iron status,其中who already has a poor iron status
是who引导的定语从句,修饰woman.