菌丝束

例句：

1. 1. The fungus grows in a mycelium that can reach several meters long.
   这种真菌在一种可以延伸几米的菌丝中生长。
2. 2. The mycelium is the foundation of the plant's growth and development.
   菌丝是植物生长和发展的基础。
3. 3. The mycelium is used to extract nutrients from the soil.
   菌丝用于从土壤中提取养分。