| 1. | Earthworms may produce antibiotic substances .
蚯蚓可以产生抗菌物质。 |
| 2. | The larvae of flies parasitize earthworms .
蝇的幼虫寄生在蚯蚓上。 |
| 3. | The earthworm population had declined by 70% .
蚯蚓数量下降70。 |
| 4. | Earthworms have been eaten to cure impotency .
服蚯蚓可治疗阳萎。 |
| 5. | The ova of earthworms are contained in cocoons .
蚯蚓的卵是包在茧里的。 |
| 6. | Earthworms have been used in testing pregnancy .
蚯蚓被用于妊娠反应试验。 |
| 7. | These worms are placed in dilute salt solutions .
将蚯蚓放在稀释盐溶液中。 |
| 8. | Earthworm channels greatly aid root growth .
蚯蚓洞穴极有助于植物根系生长。 |
| 9. | Many nematodes occur in the tissues of earthorms .
蚯蚓组织中有许多种线虫。 |
| 10. | Worms reject the finer particles when feeding .
蚯蚓取食时丢弃了较细的颗粒。 |
