坑道的英文怎么说
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坑道的英文： To dig a sap. The tunnel contract to a narrow passageway as you go deep exploratory tunnel drilling method horizontal exploratory tunnel supporting exploratory tunnel The roof of the tunnel was supported by wooden props They are ventilating the sap of a coal mine ventilation and drainage of exploratory tunnel A tunnel dug under an enemy emplacement to gain an avenue of attack or to lay explosives. A tunnel dug to intercept and destroy an enemy's mine. 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 interior sap stain The criticism sapped his determination. It will sap the base of a building. It was the beginning of the spring and the sap was rising in the boys |
