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1.The old man carefully removed the root of the tree to save it from damage.
老人小心翼翼地将树的根部移开，以免它受到伤害。
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2. The fibers are strong and durable, making them ideal for use in textiles.
这些纤维很强壮且耐用，因此非常适合用于纺织品。
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3. The fibers were so fine that they could be used to make delicate threads.
这些纤维非常细，可以用来制作纤细的线。