Some U. s airports will soon begin using what's known as "backscatter X-ray technology" to scream screen passengers.
美国的一些机场很快将开始使用一种所谓的“反向散射X射线技术”对乘客进行检查。
Some U. s airports will soon begin using what's known as "backscatter X-ray technology" to scream screen passengers.
美国的一些机场很快将开始使用一种所谓的“反向散射X射线技术”对乘客进行检查。
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