straight up(用于提问和回答问题)直率地； 真实地straightadj.直的；坦率的；正直的；准的；连续的；异性恋的adv.笔直地；直接；坦率地；连续不断地n.直的东西；传统的人；异性恋者straight grooving cutter直刃铣槽刀straightness measurement直线性测量straight-cut operation纵向切削操作Straight leg rising test直腿抬高试验straight-side flat rim直边平轮缘straight proximal tubule肾曲小管直部straight screw connector直螺纹接头straight-cutter holder直角装刀式刀杆straight and narrow path正路straight line wavelength直线波长式