The US is taking additional air security measures in the wake of last month's airliner bomb plot, a senior official has said.
美国一位高级官员称，针对上个月的飞机爆炸阴谋，美国正在采取附加航空安全措施。
The plot: When Mother Earth's molten core stops spinning for unknown reasons, a team of scientists must go to the centre and detonate a hydrogen bomb to get it to spin again.
主要情节：当大地之母的核心不是什么原因停止转动时，一队科学家们必然要去中心并且要引爆它使它再一次转动。
The plot: When Mother Earth's molten core stops spinning for unknown reasons, a team of scientists must go to the centre and detonate a hydrogen bomb to get it to spin again.
主要情节：当大地之母的核心不是什么原因停止转动时，一队科学家们必然要去中心并且要引爆它使它再一次转动。
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