Listing 7 shows a new client implementation that tests the type of the returned items.

清单7显示了一个新客户端实现，该实现测试返回项的类型。

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Which allows other firms to use Amazon's staff and warehouse space to send out goods and handle returned items.

服务，该业务允许其它公司使用亚马逊的员工和仓储空间，用以发货和处理退货。

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Which allows other firms to use Amazon's staff and warehouse space to send out goods and handle returned items.

服务，该业务允许其它公司使用亚马逊的员工和仓储空间，用以发货和处理退货。

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