Some of the species lay eggs in tunnels dug in the ground.
部门种类的企鹅将卵产在土地上挖出的道槽中。
The influence of the traffic air exchange force on ventilation in tunnels is not negligible.
交通换气力对隧道通风的影响是不容忽视的。
Many other animals dig tunnels in the earth.
许多其他的动物则在地里挖地道。
They dig deep tunnels in the ground, ruining lawns.
它们在地里打很深的地洞，毁坏草坪。
We had three tunnels in the city and one needed to be shut down.
我们在这城市里有三个隧道而其中一个必须被关闭。
Sandwiched rock between twin closely spaced tunnels is in complicated and three-dimensional stress state.
小净距隧道的中间夹岩处于复杂的三维受力状态。
Therefore, they are more difficult in geological investigation, design, construction and operation than land tunnels.
海底隧道深埋于海水以下，因而在勘探、设计、施工和运行方面都比陆地隧道更困难。
The results can be adopted in the design, construction and research of similar tunnels .
研究成果可为日后类似工程的设计、施工和研究提供有益的借鉴和参考。
We used to dig tunnels in the sand.
我们以前常在沙推中挖山洞。
Stress analysis of tunnels is performed based on initial stress measurements in the base rock.
对隧道的应力分析执行根据在基本的岩石的最初的重音测量。
In winter, I built snow tunnels and went sledding.
冬天的时候，我挖完冰道又去滑雪橇。
In winter, I built snow tunnels and went sledding.
冬天的时候，我挖完冰道又去滑雪橇。
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