Caveat: the researchers couldn't account for the presence of noise barriers or the floor level on which the subjects lived, factors that would influence traffic-noise exposure.

注意：研究人员并未考虑研究对象所居住环境中是否有隔音屏障以及居住楼层的差别，这些因素会影响暴露在交通噪音中的水平。

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The traffic jam, energy wasting and air pollution caused by special geographic environment of Chongqing become the main barriers to construct a harmonious metropolis.

特殊自然地理环境造成的交通拥堵、能源浪费和空气污染已经成为重庆市建设和谐大都市的主要障碍。

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Next, Mike set up product and Web site traffic meetings that busted barriers at the top.

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But the courthouse has since increased security, installing thick metal barriers to block traffic on the side and back of the building.

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The prime minister said the government would work with architects and designers to encourage them to build with blast-resistant materials and introduce traffic control measures like large barriers or vehicle-exclusion zones.

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