1.In fact, the blow of a hammer on a few drops of nitro-glycerine, spread out on a hard surface, was enough to create an explosion.
事实上，只要把少量的硝化甘油滴在坚硬的石头上，用锤子一击，马上就可以爆炸了。
2.They often provide the only hard surface and structure in the midst of a sandy bottom, something many sea creatures need.
在沙石遍布的海底，它们提供了仅有的坚硬表面和结构，这也是许多海洋生物极其需要的。
3.Seal the surface material: Structure pottery or exceeding two kinds alloy materials of hard surface.
密封面材料：结构陶瓷或超硬表面合金材料二种。
4.Despite the appearance of a hard surface, much of the area is a thin salt crust over soft mud.
尽管出现了坚硬的表面，大部分地区是一个地壳薄盐泥软了。
5.Digging in another trench, Phoenix hit a hard surface believed to be an icy layer, which will also be tested.
在另一个沟槽的挖掘中，凤凰号也碰到了相信是冰层的坚硬表面，也将对其进行检验。
6.Jacobs describes a den-motherly attitude that those who see only her hard surface sheen don't suspect she has. 'She gets such a bad rap.
雅各称，那些只看到她坚硬外表下的光环的人们总是毫不怀疑她会摆出女训导主任的架势。
7.It was almost edgy. I mean, in a well-rounded, safety first, pillows on every hard surface kind of way.
题材几乎敏感，但安全第一，好比在硬地上都垫上了软垫子。
8.People constantly strive hard surface, in order to get some things, in a position, in fact, the most fundamental or to a better life.
人们不断地奋斗拼搏，表面看是为了得到某个事物，处于某个地位，实际上，最根本的还是为了更好的生活。
9.Case hardening is used for gear that require a hard surface and for which good accuracy is not necessary.
局部淬火使用在那些要求表面硬度较高的齿轮上，而且很难精确的达到。
10.Baby oysters need to attach themselves to a shell or other hard surface as they grow.
当小牡蛎成长的时候，它们需要自行附着到牡蛎壳表面或其他坚硬的表面。