Listening Comprehension (random)
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用 特殊 材料 堆焊 制成 的 零件 使用 寿命 更 长 +
Yòng tèshū cáiliào duīhàn zhìchéng de língjiàn,shǐyòng shòumìng gèng cháng。
Spare parts welded from special materials can last longer.
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like: weld