It may avoid stopping transportation and polluting city environment to have excavation in the open replaced by shallow-concealed excavation for large scale underground cable tunnel construction.

采用浅埋暗挖法施工地下电缆隧道取代明沟开挖法，可避免阻断交通、污染城市环境。

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And of course we work very closely on stopping terrorism, on Afghanistan, and the issues of transportation and transit through the territory of Kazakhstan that we discussed two years ago.

WHITEHOUSE: President Obama��s Bilateral Meeting with President Nazarbayev of Kazakhstan | The White House