| 单词 | horizontal tunnel |
| 释义 | horizontal tunnel Water enters a concrete intake tower and then flows through a 2.9 m wide horizontal tunnel for 1.6 km. Retrieved from Wikipedia CC BY-SA 3.0 These birds nest in a horizontal tunnel made in a river bank or sand bank. Retrieved from Wikipedia CC BY-SA 3.0 The typical woodpecker nest has a short horizontal tunnel which leads to a vertical chamber within the trunk. Retrieved from Wikipedia CC BY-SA 3.0 The horizontal tunnels are believed to be two to three meters wide and high and hundreds of meters long. Retrieved from Wikipedia CC BY-SA 3.0 |
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