As a result, road congestion has been greatly alleviated.
前面有点儿堵车。
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There is a traffic jam ahead.
詹森一到欧洲环境保护署交通部工作,就接到了研究如何解决城市拥堵问题的任务。
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As soon as Jason came to work in the European Environmental Protection Agency's transport department, he was given the task of studying how to solve the problem of urban congestion.