Read the passage and talk about the loveliness of swallows.

1. That small and exquisite streamlined figure, covered with shiny black feathers, is light and agile, flies happily and sweetly in spring, and makes a crisp and mellow chirp. 2.( 1) At this time, one, two, one pair, two pairs ... Swallows jump and jump. (2) In an instant, with a squeak, the body jumped down like a small black spot, in the mirror-like water. ...