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21. | scamper up the steps |
| 蹦跳着上台阶 |
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22. | cylinder ridge reamer |
| 汽缸台阶铰刀 |
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23. | nominal step value |
| 标称台阶值 |
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24. | heading-and-stope mining |
| 正台阶回采 |
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25. | terraced houses |
| 台阶式房屋 |
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26. | inwardly protruding shoulder |
| 内突台阶 |
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27. | Mind (ie Don't trip over) that step! |
| 小心那个台阶! |
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28. | four-step choir riser |
| 合唱团四级台阶 |
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29. | dock-wall altar |
| 干船坞台阶 |
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30. | (architecture) a step or step-like projection on the top of a gable wall. |
| (建筑)山形墙顶端的台阶或台阶状的东西。 |
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