He was making no great roads, setting up no sure sea communications. 他没有修建巨大的道路，没有建立可靠的海上交通。
The safety of marine traffic and operations of port facilities were protected by taking appropriate marine traffic measures. 海事处采取适当的海上交通措施，从而保障海上交通安全和港口设施的运作。
英汉词典
