long-drawn-out

例句：

1. 1. The project was long-drawn-out and required a lot of patience.
   这个项目进展缓慢，需要极大的耐心。
2. 2. The negotiations were long-drawn-out, but eventually came to an agreement.
   谈判过程漫长，但最终达成了协议。
3. 3. The patient's recovery was long-drawn-out due to the severity of the injury.
   由于伤势严重，患者的康复过程非常漫长。