修复这座古桥是一项耗资巨大的工程。

Restoring this ancient bridge turned out to be a ___costly project.

这场法律纠纷最终变成了一场代价高昂的冲突。

The legal dispute turned into a ___costly conflict in the end.

修理这辆旧车比买一辆新的更费钱。

Fixing this old car is more ___costly than buying a new one.