没有任何隐蔽的额外费用。
这通常没有防潮布，虽然会产生额外的费用，但是你可以买一个跟它配套。
This doesn't usually have a groundsheet but you can buy one to fit, though it costs extra.
实际结果可能大不相同，目前没有预期的额外费用，可能会发生或减少的结果。
Actual results may differ materially and additional charges not currently expected may be incurred in connection with or as a result of the reductions.
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