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1. The car's trough-edge is worn smooth from years of use.
这辆车的沟槽边缘因为多年的使用而磨损得光滑。
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2. Theartist carefully carved the trough-edge of the statueto create a realistic effect.
艺术家仔细雕刻了雕像的沟槽边缘,以创造出逼真的效果。
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3. The old house hada trough-edge that was barelyvisible.
这所旧房子有一个几乎看不见的沟槽边缘。