1. Tunnels are being cut through mountains.
    隧道正在穿山开凿。

2. The key to escape is the smaller tunnel that runs between the two train tunnels.
    逃生出口的关键所在是运行于两条火车主隧道间的一条小隧道。

3. Doors connect the train tunnels to the smaller tunnel every quarter mile and provide escape routes.
    每隔四分之一英里就有出口接通火车隧道和小隧道，提供安全通路。

4. A guide led us through the maze of tunnels in the cave.
    向导带领我们通过山洞里如迷宫般的隧道。

5. Neither the people who own stock in the company, nor the officers of the 220 banks that provided history's biggest loan, nor the 3,000 journalists trying to imagine three parallel tunnels beneath 100 feet of water and 130 feet of clay.
    不论是公司的股票持有人，还是提供了历史上最大贷款的220家银行的官员们，或者是3,000名记者，都无一例外。记者们只可尽力想像水下100英尺、泥土下130英尺的三条并行的隧道的状况。