英语翻译If the Buyer resells the goods to,or concludes the transaction as a representative of a third party,the Buyer shall still be responsible,as the Buyer,for the complete performance of all his obligations stipulated in this Sales Contract.

英语翻译
If the Buyer resells the goods to,or concludes the transaction as a representative of a third party,the Buyer shall still be responsible,as the Buyer,for the complete performance of all his obligations stipulated in this Sales Contract.

conclude:v.结束,终止,决定,作出结论
vt.推断,断定,缔结,
concludes the transaction:达成交易
所以说在这段话中conclude应该是“缔结”的意思.
If the Buyer resells the goods to,or concludes the transaction as a representative of a third party,the Buyer shall still be responsible,as the Buyer,for the conplete performance of all his obligations stipulated in this Sales Contract.
整段话的意思是：
如果买方将货物再次售出,或者与第三方代表达成协议,那么买方仍要负有责任；作为买方,为其在销售合同中的约定条款中所有行为负有全责.

如果买方转卖此批货物给第三方，或者作为第三方的代理商达成此交易，买方依然要完全履行此销售合同规定的全部责任。

如果购买者把货物 再卖出去，或者 作为第三方代表 签订贸易协议， 则购买者仍旧需要 像销售合同里约定的 购买者 义务那样 承担起责任。
conclude： 这里是 订立，达成（协议）的意思