spike dropseed

例句：

1. 1. The spike on the fence is sharp enough to poke a finger through.
   篱笆上的刺足够尖锐，能扎破手指。
2. 2. The spike of the flag is meant to be visible from a distance.
   旗帜的尖刺是为了让远处的人也能看见。
3. 3. The spike in the road was caused by an accident.
   路上的尖刺是由于一起事故造成的。