hardadj.硬的；困难的；棘手的；坚强的；残酷的；用力的；液态的；严寒的；确凿的adv.努力地；强烈地；严重地；坚定地hardpann.硬质地层；粘土层；砂砾层

1. The immune system's response to these toxins could harm essel walls or make blood clot more easily.
   免疫系统对这些毒素的反应能够损害血管壁或使血凝块更轻易地形成。
2. This nonsurgical procedure can be used to open coronary arteries that are blocked by a blood clot.
   这种非手术性的治疗措施可以打开受到血液凝块阻塞的冠状动脉。