摘要：为了确保公路隧道内行车安全、运营畅通和维持一定的服务水平，交通工程的设计与完善必须给予足够的重视。
Abstract: in order to ensure highway tunnel safety and operation in clear and maintaining a certain level of service, the traffic engineering design and perfect must give enough attention.
如果不是花一定的时间来处理某件事的话，则这件事就好像是无足轻重，不值得给予适当的重视。
Unless a certain amount of time is allowed to elapse , it seems in their eyes as if the task being considered were insignificant, not worthy of proper respect.
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