hard-packed dirt 压紧或夯实的土
The venue for the film's premiere was a tent erected over the hard-packed earth of the school playground.
这部电影的首演是在学校操场的硬泥地上搭建起来的帐篷。
It is the ideal solution for removal of temporary cement plugs or hard-packed Bridges of deposits.
显而易见,该工具是清除临时水泥封堵和高密度沉积物的理想方案。
Bernal of the University of London, who packed hard spheres into a rubber vessel in such a way as to obtain the maximum possible density.
伦敦大学的伯纳尔教授把硬球体装入橡胶容器中,以获得可能的最大密度。
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