n.水蛭，蚂蟥，依赖他人钱财者，攫取他人收益者，寄生虫
v.用水蛭吸血，依附并榨取

原形：leech第三人称单数：leeches复数：leeches过去式：leeched过去分词：leeched现在分词：leeching

The leech attached itself to my leg, sucking blood voraciously.
这只水蛭粘在我的腿上，贪婪地吸着血。
The patient was prescribed a leech therapy to improve blood circulation.
病人被开处了水蛭疗法以促进血液循环。
In medieval times, leeches were commonly used in medicine to treat various ailments.
在中世纪，水蛭被广泛用于医学上治疗各种疾病。
The pond was infested with leeches, making it difficult to swim there.
池塘里满是水蛭，这使得在那里游泳变得很困难。
He felt like a leech, always depending on his parents for financial support.
他感觉自己像一个寄生虫，总是依靠父母的经济支持。
The scientist studied the leech's ability to regenerate lost body parts.
科学家研究了水蛭重新生成丢失身体部位的能力。
Removing the leech required great care to avoid further injury.
移除水蛭需要非常小心，以免造成进一步伤害。
Some species of leeches can survive for years without feeding.
有些种类的水蛭可以多年不进食仍能存活。
The discovery of natural anticoagulants in leech saliva revolutionized modern medicine.
在水蛭唾液中发现的天然抗凝剂革命性地改变了现代医学。
They found the leech hiding under a rock in the stream.
他们在溪流中的石头下发现了那只水蛭。