购销合同的英文：
contract of purchase

contract是什么意思：
n. 契约；合同；婚约
v. 感染；（使）缩小，缩短，收缩；订契约

The contract was negotiated.
合约已谈妥。

confidentiality of contracts
合同的保密性

Renewal of contract
合同的续订

crimp contraction
皱缩率

a contracted brow
皱缩的眉头

purchase是什么意思：
v. 购买；赢得
n. 购买；紧握

purchase freedom with Blood
以血的代价赢得自由

This orchard became ours by purchase.
这个果树园被我们买下了。

such as stores requisition, purchase requisition,
像库存调拨单，购物申请单，

He purchased this stamp at an auction.
他在拍卖会中购得这枚邮票。

Their purchase is purely a paper transaction.
他们的购买完全是纸上交易。