Elles ne se séparent point, elles ne vont pas à l’aventure pendant la rapide traversée, mais chacune tenant sa place, attire à elle celle qui la suit et le ciel en est plus obscurci qu’au départ des hirondelles. →
They would never drift apart, would make no movement at random in their rapid course, but each one, keeping in its place, would draw after it the drop which was following, and the sky would be as greatly darkened as by the swallows flying south.