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汉语拼音：kēng dào

1.利用自然地层作防护层的地下工事。用于指挥，战斗，屯兵，存放兵器、弹药、物资等。也指在地下挖掘的通道。用以荫蔽接近敌人、机动兵力和实施坑道爆破、反坑道爆破。

2.采矿工程中，井筒、平峒（与地面平行的矿内通道）和巷道的统称。

1. 开矿时在地下挖成的通道。

2. 互相通连的地下工事。用来进行战斗、隐蔽人员和储藏物资。

   巴金 《＜爝火集＞后记》：“搬到坑道里的那天晚上，我们参加了‘老政’的欢迎晚会。” 魏巍 《东方》第五部第九章：“ 郭祥 把大家迎进坑道，在幽暗的烛光下走了二三十步。”

• a tunnel horizontal to the surface leading to a mine is called an adit.

  与地表平行通向井下的坑道是平峒。

• But when divers moved into the mine early on Friday the body of the first miner was discovered at the bottom of the main shaft.

  但是当潜水员在周五早些时候向矿井靠近的时候，第一具尸体是在坑道的底部发现的。

• Within the first year, she was rewarded by the discovery of a shaft and several underground chambers and tunnels.

  第一年她颇有收获，发现了一口竖井，一些地下洞室和坑道。

• In regards to the Nydus Worm, I cannot stress enough that this is still work in progress, as this can easily be an overpowered ability.

  谈到坑道虫，我不得不再次强调这家伙依然尚未完成，因为它的技能很容易就会变得过强。

• He sprang out of the truck and crept along a narrow wet passage to the place where his father was working.

  他从车里跳了出来，沿着一条又窄又湿的坑道匍匐前往父亲作业的地方。

• Their main use is in gearboxes, hoisting equipment, rolling mills and machines used in the mining industry, e. G. Tunnelling machines.

  它们的主要用于齿轮箱、起重设备、轧钢机和用于矿山机械，例如坑道掘进机。

• blessed by geology and exploited through a huge network of mines , there are always a few extra gems available in this town.

  受益于地质状况和巨大的坑道网络，这座城镇总有一部分额外的宝石可资利用。

• During his mining ordeal, Pena famously ran up to 10 kilometers a day through a series of tunnels.

  在他遭遇矿难折磨时，Pena因为每天在一些坑道里跑步10千米而出名。

• Results The calculating formal of ventilation time and upper limit of working hour in a year are given.

  结果给出坑道内通风次数及工作人员坑道内年工作时间上限的计算公式。