they take turns to tire it out. 轮流消耗猎物的体力

139. Bringing it down...
     将猎物拿下
140. ...another.
     是另一回事
141. Working together,
     它们进行协作
142. they take turns to tire it out.
     轮流消耗猎物的体力
143. Their terrible claws bring a swift end to the exhausted Arkansaurus.
     它们恐怖的爪子 迅速了结了这只筋疲力尽的阿肯色龙
144. As dinosaurs diversified,
     随着恐龙的多样化
145. many became increasingly social.
     许多恐龙变得越发具有社会性

来自《我们星球上的生命 第一季 第五集 Life on Our Planet S01E05 巨兽阴影下》第 142 行