The Twin Towers collapsed after the attack.

双子星高塔在攻击后倒塌了.

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The tribute in light represents the lost twin towers from the World Trade Center.

不灭的灯光象征着世贸中心在9.11事件中损毁的双子塔.

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Who can erase the mental images of those planes smashing into the twin towers?

谁能抹去飞机撞进双子塔楼时留在人们心灵上阴影?

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Do some investigative work about the Twin Towers ( use newspapers, magazines, or books ).

( 使用报纸杂志和书本 ) 对这两座塔楼作一些研究工作.

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