建造这座桥花费了这些工人多久时间?花费了他们两年半时间.(用英语怎么说)

问题描述:

建造这座桥花费了这些工人多久时间?花费了他们两年半时间.(用英语怎么说)

How long did the workers spend building the bridge?
Two and a half years.