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| 21. | In such a case, wooden beams or steel plates are laid down to cover the excavation. |
| 在这种情况下，工人们就用木梁和钢板来覆盖开挖的壕沟。 |
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| 22. | One original Quarantine certificate for wooden case and or no-wood package statement issued by the SELLER |
| 木箱的原产地检疫证明和由卖方为非木制包装出具的非木制包装的声明书将通过邮件和传真发送出去. |
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| 23. | It's high quality wooden case has been designed to enhance its high sound quality, and the amplification |
| 优质的木质机壳有利于提升放音质量，其数字声音处理放大器可确保DAB广播质量，并使得该机无论在大的房间或者小的房间都十分的适合。 |
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| 24. | In such a case, wooden beams or steel plates are laid down to cover the excavation. |
| 显而易见，挖填法只适用于紧挨地面的隧道。这种施工方式的困难之一是施工中交通不能中断。在这种情况下，工人们就用木梁和钢板来覆盖开挖的壕沟。 |
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