Hydraulic back-hoe dredger is a new type of dredger developed and specially for handling hard soil and stone.

液压反铲挖掘船是近几年国际上新出现的一种新型挖掘作业船，专门挖掘硬质土和石块。

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The study provides the meaningful reference for anti-seismic safety design for railway simply supported bridge on hard-soil foundation.

笔者的研究成果为硬土质基础的铁路简支梁桥的抗震安全设计，提供了重要参考。

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In the past, it often has been hard to get complete information about current soil conditions.

VOA: special.2009.01.20

As the mulch breaks down, it provides material that keeps the soil from getting hard.

VOA: special.2009.06.30

Rivers are drying up, grazing land for cattle is scarce, and the dry soil is hard to farm.

VOA: standard.2010.04.01

In June last year, the yard was ready to be seeded with grasses and wildflowers selected by the company's meadow specialist, Ed Yates, to work well with the region's hard-packed soil and dry conditions.

WSJ: Meadows Instead of Lawns Are in Fashion in Residential Landscaping

The region's hard-packed clay soil welcomes a unique mix of plants with deep-penetrating root systems.

WSJ: Meadows Instead of Lawns Are in Fashion in Residential Landscaping

While the caesium is hard for plants and animals to take up when it is tightly bound to the soil, once in solution (dissolved in water) it can be more readily absorbed.

BBC: Daunting challenge of Fukushima clean-up