我们必须采取措施改善交通状况。

We must take measures to better the traffic.

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他说，该计划将创造就业机会，改善交通状况。

He said it would create jobs and improve transportation.

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先进的城市交通信号控制系统对改善交通状况，充分利用现有道路的通行能力起着重要作用。

The advanced urban traffic signal control system has an important effect on improving the traffic condition and sufficiently utilizing roadway capacity of the existing road.

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