这场官司已经拖了两年，诉讼费用相当昂贵。

The litigation has lasted for two years and the legal costs are quite high.

litigation 是名词，来自动词 litigate（提起诉讼、打官司），后缀 -ation 表示动作或过程。litigation 指"诉讼、打官司"的法律程序。