railroad oonstruction的用法和樣例：
例句
- Dr.Sun Yat-sen was an energetic advocator to promote the railroad development in China.
摘要孫中山先生是中國鐵路建設的積極倡導者。 - 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.
鐵路建設和其他建設一樣，在墊層建築中，應用了土力學和土壤穩定技術。
