opencast

adj [usu attrib 通常作定语] (of mines or mining) at or from a level near the earth's surface （指矿或采矿）露天开采的: opencast coal-mining 露天采煤. Cf 参看 deep-mined (deep2).

open question, open sandwich, open to, open up, open verdict, open vowel, open-air, open-and-shut, open-ended, open-eyed, open-handed, open-handedly, open-handedness, open-heart surgery, open-hearted, open-minded, open-mindedness, open-mouthed, open-plan, open-work, opener, opening, opening night, opening-time, openly, openness, opera, opera-glasses, opera-house, operable, operate, operatic, operatically, operating system, operating-table, operating-theatre, operation, operational, operations room, operative,