Cách sử dụng
A flatworm is a type of worm that has a flat, thin body instead of a round one like most other worms. They can be found in freshwater, saltwater, and even on land. They are also known as planarians and some types can be harmful to humans and animals. You might use the word flatworm when talking about a science class, a nature documentary, or when discussing parasites with a doctor or veterinarian.