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来源:雅诚德英语网
Hot rocks are shoved to the top, and erosion brings them back down the sides.
滚烫的熔岩冲上顶端,但是冰川的侵蚀又让它们退到一边去。
Hot rocks are shoved to the top, and erosion brings them back down the sides.
滚烫的熔岩冲上顶端,但是冰川的侵蚀又让它们退到一边去。