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Cases must be nailed and secured by overall metal strapping.
箱子必须用钉子钉住，并且用金属带全面加固。
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Cases must be nailed and secured by overall metal strapping.
箱子要钉上钉子，通体用金属带加固。
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Cases must be nailed, battened and reinforced by overall metal strapping.
木箱必须用钉子钉牢，加板条，并用整条的铁箍加固。
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