funnel organ

例句：

1. 1. The kidneys are responsible for filtering waste products from the blood.
   肾脏负责过滤血液中的废物。
2. 2. The process of filtration is essential for maintaining good health.
   过滤过程对于保持健康至关重要。
3. 3. The fungus grows in a tunnel-like structure called a mycelium.
   这种真菌在一种叫做菌丝的结构中生长，这种结构呈隧道状。