土木工程师同时还在忙于加长平行跑道，修一道安全围墙以及一条供安全巡逻人员使用的公路。
Civil engineers are also busy extending the parallel taxiway and constructing, a security-compound wall and roads for use by security patrols.
近年来，随着土木工程施工事故的频频发生，安全已经成为一个不能忽视的问题。
In recent years, with frequent incidents of civil engineering construction, safety has become a problem that cannot be ignored.
混凝土是当今最重要的土木工程材料之一，其质量的好坏直接关系到结构物的安全。
Concrete is one of the most important material of civil engineering. Quality of the structure concrete will affect the safety of structure directly.
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