一段法律英语翻译

卖方应保证其对在本合同项下提供的设备拥有充分、完整的所有权，

The Seller must guarantee its full and complete ownership of the equipment under this Contract;

其有充分的权力和授权出售本合同项下的设备。

The Seller must have full power to sell and authorize the right to sell the equipment under this Contract.

卖方在本合同项下提供的设备不会侵犯任何人的所有权、知识产权和其他合法权益。

That the Seller supplies the equipment under the Contract will not violate any ownership, intellectual property right and other legitimate rights and interests.

PS：法律合同种的任何一方名字首字母需要大写，以示强调，“合同”此处特指，首字母宜大写！