dà / qiáo / gōng / chéng / xīng / gōng / zhī / qián / gōng / chéng / shī / men / zuò / le / xiáng / xì / de / guī / huà

大桥工程兴工之前，工程师们做了详细的规划。

Before construction of the bridge project began, the engineers made detailed plans.