First, extract good words.
Come back naturally, small and exquisite, singing and dancing lightly, singing and dancing in Yan language, swallows spreading their wings, whispering in Yan language, cutting swallows, returning to their nests, swallowtail butterflies with silkworm heads, swallows in the hall, swallows with diced fish, old swallows in the east, singing and dancing swallows, fat swallows around, old swallows flying separately, Sheyan, five birds and six swallows, bird's nest screen, bird's nest screen.
Second, extract good sentences.
(1) It's spring, and a lively and lovely swallow flies back from the south. It spreads its long and narrow wings, spreads its scissors-like tail and flies over fields and mountains to find its own home.
(2) Swallows can also predict the weather. Whenever it rains, swallows fly very low, so I checked some information to know that swallows are beneficial insects and specialize in eating pests! So I prefer swallows.
(3) Swallow is a clever architect. They nest on the lamp holder on the wall, which is labor-saving and firm. Swallows are also very hygienic. They decorate their house when they come every year. They put new bedding in the nest and raised the walls.
Third, extract good paragraphs.
There are some little swallows in my hometown. At that time, spring had just arrived, and the swallow flew in in a hurry. There are two swallows. They went to many places for investigation and discussion, and decided to find a good family and settle down there to have children. Finally, they took a fancy to my home. First of all, swallows are very hardworking. They go out n times a day and collect the mud bit by bit with their mouths. Every time, they are only as big as soybeans, and they happily build their own nests.