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When they repeatedly stretched and relaxed the material, without breaking it, it only turned a little red.
当他们在不把材料弄破的前提下,反复拉伸时,材料只是稍微泛红而已。
youdao
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When they repeatedly stretched and relaxed the material, without breaking it, it only turned a little red.
当他们在不把材料弄破的前提下,反复拉伸时,材料只是稍微泛红而已。
youdao