apex of posterior horn of spinal cord

例句：

1. 1. Theapex of the mountain is visiblefrom here.
   这座山的顶点从这里可见。
2. 2.The apex of the competition isalways the most intense.
   竞争的顶点总是最激烈的。
3. 3. The apex of theseason is usually the warmest weather.
   季节的顶点通常是最暖和的天气。