单词:axially injection forward-wave amplifier tube
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This is the first step forward for America where we can actually say that the amount of oil leaking at the Gulf of Mexico could be slowing down. What BP tells us is that last night they successfully inserted that tube that they were going to use to s
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London's 'Tube' Plays Crucial Olympics Role Massive overhaul Head into the Tube and you never quite know what you might find. With 12 million passengers passing through every day - and three million more expected during the Olympics - the Tube is its
BBC Learning English London Life Friendliness on the tube Yvonne:I'm Yvonne Archer and this is London Life from bbclearningenglish.com. Hello! In today's programme, we're talking about friendliness on London's tubes. Is there any? As you probably kn