用railroad building造句子，“railroad building”造句

The high point in railroad building came with the construction of the first transcontinental system.

Then the railroad building era really began.

Abuses also came with the fever and excitement of railroad building.

In the last few years, important technological advances in railroad building have taken place. 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.