..an arrow of water. 一支水之箭

200. created by the water's moving surface.
     透过流动的水面瞄准
201. And then...
     随后
202. ..release...
     发射
203. ..an arrow of water.
     一支水之箭
204. They can hit prey up to two metres above them.
     射水鱼可以击中两米之上的猎物
205. But they're not born with this skill.
     但这技能不是天生的
206. They have to learn it.
     而是需要后天学习

来自《行星地球 第三季 第一集 Planet Earth S03E01 海岸》第 203 行