entering signal

例句：

1. 1. The newsystem is designed to provide an immediate and clear indication of when the vehicle has entered a restricted area.
   新系统设计为提供车辆进入受限区域时的即时和清晰的指示。
2. 2. During the testing phase, the engineers were monitoring the entering signal to ensure it was functioning correctly.
   在测试阶段，工程师们正在监测进入信号以确保其正常工作。
3. 3. The company's latest innovation involves a sophisticated system that can detect and alert drivers to any potential hazards before they enter a particular area.
   该公司的最新创新包括一个复杂的系统，可以检测并警告司机在进入特定区域之前可能存在的任何潜在危险。