But a mother never lets her calf stray too far... 但母亲不会让幼鲸跑得太远

142. The strength she loses, the calf gains.
     将自身的力量传递给了孩子
143. And it becomes more and more independent and playful.
     幼鲸得以越来越独立与活泼
144. In this nursery bay, there are plenty of playmates.
     在这片育婴海湾中 能找到很多玩伴
145. But a mother never lets her calf stray too far...
     但母亲不会让幼鲸跑得太远
146. ..and will always offer a welcome embrace.
     并总会提供一个欢迎的拥抱
147. The family keeps in constant contact with whispered calls.
     一家人会通过轻声低语保持联系
148. New research has revealed
     最新的研究表明

来自《行星地球 第三季 第一集 Planet Earth S03E01 海岸》第 145 行