| 释义 |
o.pen.cast BrH5EJ7p[N7kB:st, $5oJ7p[n7kAstadj [not gradable]Am and Aus o.pen-cut H9RWYpENYkVt, $9oWYpEn-, Am o.pen-pit H9RWYpEmYpIt, $9oWYpEn-being or involving rocks, esp. coal, taken from the surface of the ground rather than from passages dug under it露天开采的opencast coal露天开采的煤opencast mining露天采矿
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