railroad oonstruction的用法和样例：
例句
- Dr.Sun Yat-sen was an energetic advocator to promote the railroad development in China.
摘要孙中山先生是中国铁路建设的积极倡导者。 - Soil mechanics and soil stabilization techniques have been used in the construction of footings for railroad lines as well as for other kinds of construction.
铁路建设和其他建设一样，在垫层建筑中，应用了土力学和土壤稳定技术。
