shuǐ / zhì / sù / shì / yì / zhǒng / néng / gòu / yì / zhì / xuè / yè / níng / gù / de / dàn / bái / zhì水蛭素是一种能够抑制血液凝固的蛋白质。Hirudin is a protein that can inhibit blood clotting.