apical pore

例句：

1. 1.The plant has a central apex pore that allows gases to escape.
   这种植物有一个中心孔，气体可以从这里排出。
2. 2.The researcher found the apex pore of the fossilized tree.
   研究人员发现了化石树的顶端孔。
3. 3. The apex pore is where the water vapor condenses into liquid droplets.
   顶端孔是水蒸气冷凝成水滴的地方。