除非你有一个不对称的设置，在这种情况下客户端可以 POST 和/或 PUT 它的订单到服务器的某处。

Unless you have an asymmetric set-up, in which case the client can POST and/or PUT its order somewhere on the server.

youdao

下订单时，客户需要填写PO表单，或向操作员提供相同的信息，以便填写此表单。

When placing an order, the customer needs to fill out a PO form or give the same information to the operator for filling out the form.

youdao

下订单的客户的标识符。

Identifier of the customer who placed the order.

youdao