坑道的英文：
SAP
To dig a sap.
挖掘坑道
The tunnel contract to a narrow passageway as you go deep
再往里走, 坑道缩小成了一条窄窄的通道
exploratory tunnel drilling method
勘探坑道掘进方法
horizontal exploratory tunnel supporting
勘探水平坑道支护
exploratory tunnel
地下勘探坑道
The roof of the tunnel was supported by wooden props
坑道顶用木柱支撑。
They are ventilating the sap of a coal mine
他们正在使煤矿坑道通风。
ventilation and drainage of exploratory tunnel
坑探勘探坑道通风排水
A tunnel dug under an enemy emplacement to gain an avenue of attack or to lay explosives.
地雷坑道为了进攻或安放炸药而在敌人防御工事下挖掘的坑道
A tunnel dug to intercept and destroy an enemy's mine.
对抗地道截断或破坏敌人坑道而挖的地道
n. 液，汁；傻瓜；精力，活力；坑道
v. 削弱；挖坑道；挖掘以破坏基础
sap wood sleeper
边材木枕
interior sap stain
边材内部变色
The criticism sapped his determination.
批评削弱了他的决心。
It will sap the base of a building.
它会逐渐侵蚀建筑物的基石。
It was the beginning of the spring and the sap was rising in the boys
正当初春季节，勃勃的生气在小伙子们身上奔涌。