heavy-duty tractor 重型拖拉机
duty tractor
责任拖拉机
以上为机器翻译结果,长、整句建议使用 人工翻译 。
Mulvaney noted that shipping, for example, 6.2 million pounds of waste by heavy-duty tractor-trailer from Fremont, Calif.
NPR: Solar Industry Grapples With Hazardous Wastes
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