borings钻孔碎屑,金属切屑boringadj.令人厌烦的；乏味的Boring lectures make me yawn.乏味的演讲让我呵欠连天。boring cast -in -place pile钻孔灌注桩boring and expanding bottom pile钻孔扩底桩boring parameter analysis method掘进参数分析法boring and milling maching center镗铣加工中心Boring spindle and boring bushing镗杆镗套boring front exploring roof bolter打前探锚杆Boring-machine setter-operator镗床安装工Boring teachers make bored students.令人感到厌烦的老师，会产生感到厌烦的学生。boring across underneath high-speed railway下穿高速铁路