But today, she is teaching two youngsters 但今天 它正在传授两头年轻虎鲸

137. Other creatures, however, are also listening.
     然而 听到声音的还有其他生物
138. Orca have heard the splashes.
     虎鲸循声而来
139. This female specialises in hunting rays.
     这头雌性虎鲸精通狩猎蝠鲼
140. But today, she is teaching two youngsters
     但今天 它正在传授两头年轻虎鲸
141. the finer points of Mobula ray hunting.
     狩猎蝠鲼的细节诀窍
142. The rays are fast and can outmanoeuvre an orca.
     蝠鲼的速度很快 甚至快于虎鲸
143. She knows she needs to herd the prey into a tight group...
     雌虎鲸明白它需要将猎物驱赶到一起

来自《行星地球 第三季 第二集 Planet Earth S03E02 海洋》第 140 行