In-car air circulation system can't entirely clean up dirty air lingering in cabins.

车内空气循环系统不能彻底地清除逗留在车内的污浊空气。

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Your app should remove files from this directory as soon as it is done with them. The system may also purge lingering files from this directory at system startup.

当文件不再需要时，应当从这个文件夹中移除。系统启动时，可能会清理这个文件夹中的剩余文件。

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Critics of the bailout program say its rules are opaque and its execution AD hoc, leading to a lingering lack of confidence in the the financial system.

批评这一救援行动的人士说，救援规则不透明，具体执行也没有一定之规，导致人们对美国金融体系迟迟无法恢复信心。

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Rather, it was whether lingering issues with the system's software would prove more long-lasting and more inconvenient than city officials hoped.

WSJ: Open to All, New York City Bike Share Copes With Glitches

An old but creaking system of consensus, the lingering loyalty of bosses and employees to an unaffordable social-welfare model, and a web of constitutional checks and balances designed to prevent even the most fleeting thought of another tyranny, have all made it extraordinarily hard to carry out reform in Germany.

ECONOMIST: Drowning in troubles | The

This reflects not only Mr Saleh's lingering personal popularity, and the weight of a patronage system that extends beyond the large bureaucracy and army to tribal leaders and favoured businessmen, but also the widespread fear that the country is simply too fragile to cope with a transfer of power.

ECONOMIST: The big surprise is that this was a real live election