Hi, selina, 官司到了今天就是诉讼，一般英文是用 lawsuit。 打官司可以说成 bring a lawsuit 或 file a lawsuit。 打赢官司就是 win a lawsuit，打输官司就是 lose a lawsuit。 打官司有时会撂下狠话说「咱们法庭见」，那就是 (I'll) see you in court。