久未流通的空气中有股淡淡的家具漆的气味。

The still air smelled faintly of furniture polish.

《柯林斯英汉双解大词典》

2012年版“吉利钱”均为未流通的新纸币，面值一美元，序列号以“8888”开头。在中国，数字8代表“发财”。

The product features an uncirculated one-dollar note with a serial number beginning with "8888" as the number 8 is seen by many Chinese as a symbol of good fortune.

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在一些例子，控制系统相适应的控制一个或燃料的来源地及燃料电池操作栈未使用的燃料流通为基础的。

In some examples, a control system is adapted to control operation of one or both of the fuel source and the fuel cell stack based on the flow of unused fuel.

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