cystacanth

例句：

1. 1. The cystacanth was found in the riverbed, causing a stir among the locals.
   在河床上发现了水蛭，引起了当地人的轰动。
2. 2.The cystacanth is known for its ability to attach itself to humans and feed on their blood.
   水蛭以其附着在人类身上并吸食其血液的能力而闻名。
3. 3. The cystacanth has been used as a medical treatment for centuries, but it is now considered dangerous due to its potential to cause infections.
   水蛭作为一种治疗手段已有数百年历史，但由于可能引发感染，现在被认为是危险的。