1. Siv: Tsau excavator steel grab yog ib yam khoom siv, nws lub luag haujlwm tseem ceeb yog nqa cov khoom seem hlau, seem steel, tiav steel tuav, muaj pov tseg, gravel, siv pov tseg, pov tseg hauv tsev thiab lwm yam ntaub ntawv grasping, loading hauj lwm, dav...
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