forerun

例句：

1. 1.The ship's forerun is covered in seaweed.
   这艘船的前部被海藻覆盖。
2. 2. The forerun of the mountain was covered in snow.
   这座山的前部被雪覆盖。
3. 3. The forerun of the new project is already underway.
   新项目的前部已经开始了。