[译] 他们双方进入了谈判。
[误] They entered negotiations with each other.

[正] They entered into negotiations with each other.
[注] “进入谈判”的意思是“开始进行谈判”，所以应该说 enter into negotiations, 其中 enter 是不及物动词，与 into 连用，表示“开始从事”。