Hot steel is quenched to harden it.

烧热钢放入水中骤冷使之坚硬。

To build this tunnel we had to cut through the solid rock.

为了修建这条隧道, 我们开坚硬岩石。

He breaks up strong ground with a pick.

他用镐刨开坚硬地面。

These are useful in hard rock mining where high brisance, high shattering effects, are desired.

这种炸药，对需要高威力、高破碎效应坚硬岩石矿，是有用。

The outer surface of ship’s hull is very hard.

船体外表面非常坚硬。

The profile of the old warrior was characterized by a strong jaw and an aquiline nose.

老战士侧面像特征是个坚硬下巴和个鹰钩鼻。

These shotty nodes are usually firm, not fixed, and are less than a centimeter in diameter.

这些似弹丸样结节通常坚硬，不固定，直径小于1厘米。

The substance is hard and granular.

该物质地坚硬, 呈颗粒状。

Drupe (pyrenocarp) A fleshy indehiscent fruit containing one or more seeds each surrounded by a hard stony wall, the endocarp.

核果（子囊壳）：是种肉质闭果，其内包含枚或多枚种子，并且每粒种子包被着坚硬，内果皮。

If the underground eluvium is thick enough, the hard portion of it can be used as support layer of stake ends.

而厚度较大地下残积土坚硬部分可作为桩端持力层。

During normal play, there are six players, including one goaltender, per side on the ice, each of whom is on ice skates.

每名队员都配备支带杆刃冰球杆来控制场上唯个小而坚硬扁平黑色圆盘形球，它被叫作冰球。