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环保安全，对人体及精密设备和其它珍贵财物无任何伤害。
Environmental protection, without any harm to body, precision equipment and other precious property.
youdao
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环保安全，对人体及精密设备和其它珍贵财物无任何伤害。
Environmental protection, without any harm to body, precision equipment and other precious property.
youdao