因此养护和运营也是公路工程的重要部分。
Consequently, maintenance and operation are important parts of highway engineering.
在运营中的高速公路上进行路面养护工程施工作业，交通安全问题尤为突出。
Traffic safety is quite important in the pavement maintenance of expressway during operation.
在运营中的高速公路上进行路面养护工程施工作业，交通安全问题尤为突出。
Traffic safety is quite important in the pavement maintenance of expressway during operation.
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