If low lands must be used for the bean crop , they should be ridged . 如果低地必须用于种植豆类作物，就必须把地整成交替的垄和沟。
To minimize channeling effects, the gaas target should be misaligned from the axis of the beam . 为了使沟道效应最小，GaAs靶应稍偏离离子束的轴向。
A little beyond him there was a dip in the ground, where a streamlet soaked among dead leaves . 离他不远的地上有一条小沟，沟里的枯叶被一股溪水浸渍着。
They all sat down in the ditch, except the children, to recover from the shock . 除了孩子们外，大家都在沟里坐了下来，以便在丧魂落魄之后能恢复恢复元气。
He saw again the dead bodies in the green draw, the naked look of lacerated flesh . 他眼前顿时又闪过了青山沟里的那几具尸体，似乎又看见了那一副血肉狼藉的惨状。
Then i nearly fell into a very deep narrow ravine, almost no more than a scar in the hillside . 后来，我几乎掉进一条很深的小窄沟里，这条小沟不过是山坡上的一道裂痕。
Elsewhere, two plates may shift toward each other and converge along a deepsea trench and island arc . 在别的地方，两块板块又可能相向移动而沿着深海沟和岛弧逐渐聚合。
Cows lean and shaggy and looking pinched up by hunger, were greedily tearing at the grass along the ditches . 瘦小的、毛蓬蓬的，显然是饿着的母牛贪心地乱嚼着沟边的野草。
Very quickly jack stepped to the side of the road, lay down in the ditch, and began to look very intently up into the sky . 杰克很快走到路边儿，躺在沟里，聚精会神地朝天上看。
The anchors plunged into this sea of flowers, and formed a track which closed up behind them like that of a vessel . 这些锚在充满花的大海中沐浴着，象帆船在海涛上留下的痕迹一样画出一道浅沟。
