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adj. 选中的；格子花纹的 | v. 检查（chec...
n. 检验员；收银员；棋子；方格图案；制止...
未完待续
The programme, called I-Checkit, is intended to allow security checks to start as soon as a potential flyer books a ticket by extending access to the database to airlines, hotels and banks.
BBC: How safe is your passport?
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