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[by:听力课堂网～www.tingclass.net]
[00:01]raid
[00:03]... federal and local authorities in 14 states staged
[00:07] "Operation Safe Travel"-raidson airports to arrest employees
[00:14] with falseidentification.
[00:20]rail
[00:21]... most products that arrive by rail or air use interstates
[00:29]for the last leg of the journey by vehicle.（2006.6）…
[00:41]relief
[00:44]To our relief, Geoffrey's illness proved not to be as serious
[00:50]as we had feared. relieve7