Podocystis

例句：

1. 1.The leech was slowly sucking the blood out of my arm.
   水蛭慢慢地吸走了我的血。
2. 2. The leech had already attached itself to my skin and was beginning to pump blood.
   水蛭已经附着在我的皮肤上，并开始抽血了。
3. 3. The doctor warned us not to touch the leech, as it could be dangerous.
   医生警告我们不要触摸水蛭，因为它可能是危险的。