Hardonn.哈登hardadj.硬的；困难的；棘手的；坚强的；残酷的；用力的；液态的；严寒的；确凿的adv.努力地；强烈地；严重地；坚定地hard-core addict严重吸毒成瘾者hard bearing steel淬硬轴承钢Hard-easy effect“简单-困难”效应hard-rock tunnel硬岩巷道hard-packed snow实雪hard rock concrete硬石混凝土hard wheat futures硬麦期货hard rubber scraps硬质胶屑hard-heading man硬岩掘进工hard center nozzle硬芯喷嘴