apex of spiralia

例句：

1. 1. The sun sets at the apex of the sky.
   太阳在天空的最高点落下。
2. 2. The team reached the apex of their performance.
   队伍达到了他们表现的顶峰。
3. 3. The mountain was at its apex during the summer.
   山在夏天的时候达到它的最高峰。