The world’s largest and deepest underground high-speed railway station has beenbuilt 102 meters beneath the Great Wall at the （）

猜你喜欢

• Karez is a water conservancy system in the arid region of （）, consisting of （） connected by underground .
• The labor dispute turned out that the coal miners decided to ___the pay rise for the sake of greater work safety underground.A.s
• The leader of Underground Railroad Harriet Tubman helped many slaves escape.