How about the tender blue spring?

"Blue" refers to the blue sky. "A few wooden poles are connected together with a few thin wires. There are a few thick and elegant little black spots on the line, which are swallows. " "Wooden poles" are actually telephone poles, while "poles" are used to describe very small and thin things. As the name implies, the mark is a trace. Thin lines like traces indicate the thinness of wires. No matter how thin the wire is. This shows that the author's observation angle is far away, which can be seen from the "small black dot".