2. The last two sentences are mainly expressed by "setting off" (or "positive lining", "dynamic lining" and "negative lining" are not given points). If you don't give a specific expression, but explain how this technique is used concretely, you can also) Lie Watch describes the poet lying on his back on the boat and staring at the blue sky and white clouds. The so-called "the sky does not move" is actually the illusion of the people on board. The flow of white clouds sets off the speed of the ship, which is in line with the first sentence. (That's right)