英语听力：自然百科 冰冻星球 前往地球尽头—16

 The seal is now what the killer¹ wanted, but the hunt is far from over. They need to wrap their prey² by the tail while avoiding its snapping jaws³. Only them will they be able to pull it down and drown it. Side swipes create farther underwater turbulence⁴,  a new tactic⁵. Growing bubbles gives cover for others to lunge at the seal's tail. Somehow the seal manages to reach a tiny ice floe⁶. The killers⁷ could easily grab it, but now this seems to become again. The seal's life hangs on a roll of the ice. Yet again, the pod joins forces to dislodge the seal. The seal seizes a chance to escape.

1 killer   

n.杀人者，杀人犯，杀手，屠杀者

参考例句：

• Heart attacks have become Britain's No.1 killer disease.心脏病已成为英国的头号致命疾病。
• The bulk of the evidence points to him as her killer.大量证据证明是他杀死她的。

2 prey   

n.被掠食者，牺牲者，掠食；v.捕食，掠夺，折磨

参考例句：

• Stronger animals prey on weaker ones.弱肉强食。
• The lion was hunting for its prey.狮子在寻找猎物。

3 jaws   

n.口部；嘴

参考例句：

• The antelope could not escape the crocodile's gaping jaws. 那只羚羊无法从鱷鱼张开的大口中逃脱。
• The scored jaws of a vise help it bite the work. 台钳上有刻痕的虎钳牙帮助它紧咬住工件。

4 turbulence   

n.喧嚣，狂暴，骚乱，湍流

参考例句：

• The turbulence caused the plane to turn over.空气的激流导致飞机翻转。
• The world advances amidst turbulence.世界在动荡中前进。

5 tactic   

n.战略，策略；adj.战术的，有策略的

参考例句：

• Reducing prices is a common sales tactic.降价是常用的销售策略。
• She had often used the tactic of threatening to resign.她惯用以辞职相威胁的手法。

6 floe   

n.大片浮冰

参考例句：

• Two penguins are standing on ice floe.两只企鹅站在一块浮冰上。
• Somehow the seal manages to reach a tiny ice floe.不知何故，海豹设法到达了一块小浮冰上。

7 killers   

凶手( killer的名词复数 )； 消灭…者； 致命物； 极难的事

参考例句：

• He remained steadfast in his determination to bring the killers to justice. 他要将杀人凶手绳之以法的决心一直没有动摇。
• They were professional killers who did in John. 杀死约翰的这些人是职业杀手。