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短语

Rolloch

n
冶金 back hole
煤炭 chimney; ore chute; drop-hole; incline; incline shaft
矿业 bing hole; boxhole; chute; counterchute; countershute; draw hole; drawhole; drophole; pass; shute; sliding hole; spout road
Rolloch
: 15 短语, 2 学科
冶金1
矿业14