那么冷的天,冰层会很厚,人不会陷落的.裂缝是正常的,是因为结冰越来越多,体积膨胀,会挤裂.
又是精品.
本帖于 2007-02-02 14:43:36 时间, 由普通用户 DeepCreek 编辑
那么冷的天,冰层会很厚,人不会陷落的.裂缝是正常的,是因为结冰越来越多,体积膨胀,会挤裂.
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