artificial leech

例句：

1. 1. The researcher found that the artificial leech could be used to extract valuable information from a patient's body without causing any harm.
   研究人员发现，这种人造吸血虫可以用来从病人体内提取有价值的信息，而不会对病人造成伤害。
2. 2. The doctor warned the patient not to use the artificial leech on his wound as it could cause infection.
   医生警告病人不要在他的伤口上使用这种人造吸血虫，因为它可能会导致感染。
3. 3. The scientist developed an artificial leech that could detect and treat cancer cellsin the body without damaging healthy tissue.
   科学家开发了一种人造吸血虫，可以检测并治疗体内的癌细胞，而不会损害健康组织。