您要查找的是不是：
- stepped radial interstage seal 级间高低齿式径向密封
- He stepped up so as to be able to speak. 为看得更清楚，他上到高处。
- My boss was too old to work well. He stepped down. 我的老板年龄太大，做不好工作了，他上星期离了职。
- The man stepped in and asked for my father. 那个人走进来求见我父亲。
- She stepped aside to let them pass. 她站到一边让他们走过去。
- The ice cracked as I stepped onto it. 我一踩冰就裂了。
- He bounced into the room with a springy step. 他以轻快的跑步跳进房间。
- Experimental study of crenellated radial labyrinth seal. 锯齿形径向迷宫密封的实验研究
- interstage seal 级间密封装置
- He stepped on to the sidewalk from the bus. 他从公共汽车走下到人行道上。
- They stepped out of the sun into the coolness. 他们到阴凉处躲避烈日。
- They stepped over his prone body. 他们从他俯卧的身体上踩过去。
- He stepped aside to let me pass. 他站到一边让我过去。
- I hope my ideas are in step with public opinion. 我希望我的想法跟公众舆论是一致的。
- She stepped on a loose stone and twisted her ankle. 她踩到一块松动的石头上，扭伤了脚踝。
- She summoned up her courage and stepped in. 她鼓起勇气走了进去。
- You've just stepped on my foot! I beg your pardon. 你刚才踩了我的脚!请原谅。
- She stepped into the room and sat down in a sofa. 她走进屋子在沙发上坐下。
- The men stepped off in good spirits. 战士们精神饱满地开始了行军。
- He stepped lightly over the puddle. 他敏捷地跨过泥水坑。
