为了帮公司挺过难关，这家人决定出售他们几个世纪以来一直珍藏着的部分名画
In order to tide the company over, the family decided to sell parts of the famous pictures which they had kept for several centuries.
这样翻译有没有语法错误？谢谢！
The family decided to sell some famous pictures which had been kept for several centuries to tide over the company.
parts建议不要，可能会引起歧义。（画肯定是一张一张的）
【几个世纪以来一直珍藏的】建议用被动，因为动作的发出者肯定不是they.