人在做挖沟之类的工作时也会发出表示疲劳的声音。Larry，那grunt work是不是就是指繁重的体力劳动？
And people make grunting sounds, too, when they are working really hard at something like digging ditches.
挖沟指为提供规定尺寸和管子埋设深度的管沟所需的全部挖土工作。
Ditching includes all excavation work required to provide a ditch of the specified dimensions and depth of pipe cover.
还包括清除在挖管沟范围内影响挖沟机工作的树桩和树根。
It also includes removal of tree stumps and roots in the ditch line that would interfere with operation of ditching machine.
在那个时候，有许多解放黑奴说，离开了农场和家乡做了陌生的工作，如建设铁路和挖沟等。
At that time, there were many liberated black slaves that left the farm and the hometown to do the unfamiliar work, like building railroads and trenching and so on.
在那个时候，有许多解放黑奴说，离开了农场和家乡做了陌生的工作，如建设铁路和挖沟等。
At that time, there were many liberated black slaves that left the farm and the hometown to do the unfamiliar work, like building railroads and trenching and so on.
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