Mr. McDonald was here working overtime on Sunday. Just look at the trail he left.
麦当劳先生星期天来加班了，看看他留下的痕迹。
The software has two functions: working out cutting data and simulating the cutting trail.
该软件具有切割数据求解和切割轨迹模拟两大功能。
The software has two functions: working out cutting data and simulating the cutting trail.
该软件具有切割数据求解和切割轨迹模拟两大功能。
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