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Hànyǔ
cmn-003
lu4 tian1 cai3 kuang4 xue2
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露天采矿
普通话
cmn-000
露天采矿学
Hànyǔ
cmn-003
lu4 tian1 cai3 kuang4
English
eng-000
open cut mining
English
eng-000
open pit mining
English
eng-000
surface mining
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