您要查找的是不是：
- The upper horizontal part of a step in a staircase. 踏步板楼梯中一个台阶上的水平的上部
- There was the sound of a step outside the door. 门外有脚步声。
- The difference, expressed in Hertz, between the two limiting frequencies of a band. 一个频带的上下界频率之差，单位用赫兹表示。
- An electronic device that converts one frequency of a radio signal to another. 变频器将无线电讯号从一种频率转换成另一种频率的电子装置
- frequency of a step 步频
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- Last year, I miscarried in the middle of a step aerobatic class. 去年，我在一门航空特技等级课程的中期流产了。
- A frequency of one million megahertz,10000?200Hz. 一百万兆赫(兹)频率，即10000?200赫(兹)。
- Will you partake of a drink with us? 和我们一同喝一杯好吗？
- A frequency of one million megahertz,10 ?12?Hz. 一百万兆赫(兹)频率，即10??12?赫(兹)。
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- An oscillator for generating the carrier frequency of a transmitter. 主控振荡器产生载波频率的振荡器
- He let himself down slowly by means of a tope. 他借助一根绳子慢慢地下来了。
- A frequency of one million megahertz,1012Hz. 一百万兆赫(兹)频率，即1012赫(兹)。
- He went about in the disguise of a sailor. 他伪装成海员到处流窜。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- The novel unrolls the history of a certain woman. 那本小说揭露了某个女子的过去。
- The war was lost because of a shortage of munitions. 战争因军火不足而失败。
- A man appeared at the castle gate in the guise of a woodcutter. 一个男子打扮成樵夫的模样出现在城堡的门口。
- Examine the falsework of a house. 检查一座房屋的临时鹰架。
