名词
中文翻译：自助结账同义词
同义词：
['self-service checkout', 'self-service check-in', 'self-service payment']
例句：
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1. At the airport, you can use your card to self-check in and self-check out.
在机场，你可以使用你的卡进行自助登机和自助退机。
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2. The store offers self-service checkout for customers.
该商店为顾客提供自助结账服务。
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3. During the checkout process, please make sure to scan the barcodes on the tags.
在结账过程中，请确保扫描标签上的条形码。