详细解释:【计】 逻辑数据库级
【化】 低密度脂蛋白
英语解释：
名词 ldl:
a lipoprotein that transports cholesterol in the blood; composed of moderate amount of protein and a large amount of cholesterol; high levels are thought to be associated with increased risk of coronary heart disease and atherosclerosis同义词：low-density lipoprotein, beta-lipoprotein