| 41. | tunnel a hole, shaft, passage, etc |
| 挖掘洞穴, 矿井, 通道等
|
| 42. | water seeping through the roof of the tunnel |
| 从隧道顶部渗出的水
|
| 43. | simulate flight using a model plane in a wind tunnel |
| 用模型飞机在风洞里模拟飞行
|
| 44. | sink a tunnel into the side of the mountain |
| 在山腰挖隧道
|
| 45. | a subterranean passage, river, tunnel |
| 地下通道, 河流, 隧道
|
| 46. | blank off a tunnel |
| 封锁隧道
|
| 47. | pierce mountain by tunnel |
| 开凿穿山隧道
|
| 48. | a mountain pierced by a tunnel |
| 有隧道穿过的山
|
| 49. | have direct tunnel connection to a place |
| 有隧道直通某地
|
| 50. | drive a tunnel through a hill |
| 挖一条穿山隧道
|