He suggested that a double railway tunnel should be built.
他提议建一条双轨隧道。
EARLY this month, a massive new railway tunnel opened for the first time.
本月初，一个崭新的巨大铁轨隧道首次通车。
Taihangshan tunnel is currently the longest mountain railway tunnel in China.
太行山隧道是目前我国设计的最长山岭铁路隧道。
They are digging a tunnel through the mountain for the new railway.
他们在为新铁路开凿一条通山隧道。
He suggested that a double railway - tunnel should be built.
他提议建一条双轨隧道。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道。
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