road sinking bridge fatigue tunnel leakage blocking dam grouting mountain jet pile foundation reinforcement of large section prefabricated bearing structure

idiom explanation: high soccer: high talent, a respectful word to call other students. students with excellent grades. source of idiom: liu yiqing of the southern song dynasty "new language literature of the world": "zheng xuan was under ma rong's disciple and could not meet for three years, gao zu's younger brother...