滴水叶尖现象：热带地区对流运动显著，每天午后两点左右都会由于强对流而形成对流雨，而热带地区的植物较茂盛，雨水顺叶尖流下，植物在进化过程中逐渐形成了滴水叶尖。
Dripping Tip: Convective movement is significant in tropical areas. Convective rain will be formed due to strong convection around 2 o'clock in the afternoon every day. Plants in tropical areas are more luxuriant. Rain water flows down the tip of the leaves, thus forming the dripping tip phenomenon during evolution.
