他们挖沟以阻止森林大火蔓延。
各种方法和管道几何挖沟使用。
他们是在冬天挖沟铺设油管的。
It was in winter that they dug trenches and laid the oil pipes.
使用挖土机是最常用的挖沟方法。
The most common method of ditching is done by use of a ditching machine.
为挖沟器的设计奠定了理论依据。
It established the theoretical base for the design of trenching implement.
山姆：所以我们就要为南方挖沟去。
建立了挖沟机整体受力模型。
一个非常炎热的夏日，两个人正在挖沟。
一些士兵被分派去挖沟壕。
让它们攀爬，挖沟，架桥和使用降落伞。
Let them climb, dig trenches, build Bridges and use parachutes.
十名战士被分派去挖沟。
挖沟人转了转身子，试着发力打老板的手。
The boss removed his hand and the ditch digger hit the tree.
工人们在挖沟。
在地面凹凸不平地区也常用反铲挖土机挖沟。
A backhoe is often used in ditching where the soil conditions are usually rough.
会不准我们挖沟吗？
他们挖沟把水排掉。
他便说，耶和华如此说，你们要在这谷中满处挖沟。
And he said, Thus saith the LORD, Make this valley full of ditches.
抗真菌活性测定是采用琼脂斜面稀释法及挖沟法进行。
Antifungal activity was measured by means of AGAR medium dilution method and AGAR plate dig groove method.
如果不为它挖沟疏导，它就会把周围的土地变成沼泽。
If it is not a grooming, it will put the surrounding land into a swamp.
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.
论述了三种不挖沟敷设聚乙烯管技术的施工、应用和优缺点。
This paper describes the construction, utilization, advantage and disadvantage of three kinds of trenchless techniques of lay polyethylene pipe.
介绍了在海淤泥层采用石粉作为管道基础开挖沟槽的施工技术。
This paper introduces the construction technology of digging groove in the sea sludge layer, the pipeline foundation of which is made of stone powder.
挖沟撩壕栽培能极显著地提高三叶木通单位面积内茎藤和果实产量；
The trenches for cultivation can remarkably enhances the unit area output for the stem and fruit of Akebia trifoliate.
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.
我很清楚，挖沟排水和筑坝拦水正把许多河流和沼泽地搞得一团糟。
I was well aware that draining and damming were making a mess of many rivers and wetlands.
如果在挖沟时有所折衷，则只能得到一条宽度不均匀或者深度不同的沟。
If you make compromises when you dig a ditch, you just get uneven width or unequal depth.
一个挖沟的工人加班一小时可以拿到更多钱，计件工完成的件数越多，赚得越多。
A ditch digger can work an hour of overtime for extra pay, and a piece worker earns more the more he or she produces.
计算分析了挖沟机在受到牵引力、海流力、土壤阻力等多种载荷作用下的可靠性。
Computing and analyzing the reliability of ditch digger under many loads, such as the pull, the drag of ocean current and the edaphic drag.
计算分析了挖沟机在受到牵引力、海流力、土壤阻力等多种载荷作用下的可靠性。
Computing and analyzing the reliability of ditch digger under many loads, such as the pull, the drag of ocean current and the edaphic drag.
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