Artificial lights block formation of molecules that bond with air pollutants to clear the air.

人工照明系统阻碍了空气污染物与水分子的结合，起到了净化空气的作用。

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After discussing the security design about three factor, we analyze and implement the security in the Bond Block Trade System.

通过这三方面的安全设计，将证券大宗交易系统的安全统筹分析并实现。

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The selection of priming paint, glue bond, block material and surface paintbased on the nature of the corrosive medium is discussed.

同时还介绍了根据腐蚀介质、温度选择底漆、胶合剂、面漆等的搭配原则。

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U.S. stock futures are broadly lower heading into the open, as Wall Street frets over European dealings for a Greek bond-swap deal while Iran reiterated its threat to block the Strait of Hormuz.

FORBES: U.S. Stock Futures Decline on Greece, Iran Worries; Texas Instruments Calls a Bottom