慢速英语:Soda Bomb, Paris Raid and David Beckham

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2. trigger vt.引发，触发; 扣…的扳机
例句：The earthquake may trigger landslides or similar local surficial movements.
地震会引起滑坡或类似的局部地表运动。

3. retire vi.退休; 撤退
例句：At the age when most people retire, he is ready to face a new career.
在大多数人都退休的年龄，他却准备好面对新的职业。

4. opponent n. 对手; 敌手; 反对者
例句：He downed his opponent in the first round.
他在第一个回合中击倒对手。

5. claim vt.声称; 索取; 断言
例句：Her claim was disallowed on the ground(s) that she had not paid her premium.
她要求赔款遭到拒绝, 原因是她事先没有交纳保险费。