mine

They learnt how to lay mines (= put them in place ) ..他们学习了如何布雷。

coal mine,煤矿，煤矿坑

gold mine,金矿，金山

friend of mine,我的朋友

copper mine,铜矿

iron mine,铁矿；铁矿山

mine ventilation,矿井通风；矿山通风

underground mine,地下矿山；地下开采矿

mine hoist,矿井提升机；矿井吊车

salt mine,盐矿；岩盐产地；岩盐坑

iron ore mine,铁矿山

mine field,矿区；[军]雷区

open pit mine,露天矿

mine exploitation,矿山开发

strip mine,n. （美）露天矿

land mine,地雷

acid mine drainage,酸性矿水排水；排泄酸性矿水

mine survey,矿山测量[地理]

mine surveying,矿山测量学；矿山勘测

mine clearance,扫雷

a mine of information,知识的宝库