...；地铁区间隧道 [gap=223]Key words wholly-covering type, waterproofing by zoning, pre-grouting, station-to-station tunnel...
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station-to-station tunnel
叫号电话的隧道
以上为机器翻译结果，长、整句建议使用 人工翻译 。
She also foresees a spur linking Britain's only existing high-speed line (from the Channel Tunnel to London's St Pancras station) to Heathrow airport.
ECONOMIST: High-speed rail
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