坚硬的

Soil near the surface and eventually reached bedrock, the hardened lava of the Columbia Plateau.

洪水冲洗掉地表附近松软的风化土，最终到达了岩床，哥伦比亚高原上坚硬的火山岩。

The waters scoured off the soft, windblown soil near the surface and eventually reached bedrock, the hardened lava of the Columbia Plateau.

洪水冲洗掉地表附近松软的风化土，最终到达了岩床，哥伦比亚高原上坚硬的火山岩。

This peg is made with a hard plastic inside and a very soft rubber combination on the outside.

这款支架内部由非常坚硬的塑料制成，外部由柔软的合成橡胶包裹。

PDC bit technology is fine-tuned for specific formations located in fields traditionally dominated by roller cone bit applications.

简介：最近，史密斯钻头公司推出一种PDC钻头技术，它专门用来钻坚硬的碳酸盐岩和耐磨的砂岩地层。

The lion had sharp claws and teeth; the eagle had wing the turtle had a hard shell ; but man, although he stood upright with his face toward the stars, had no weapon with which he could defend himself.

狮子有锐利的爪和牙齿；老鹰有翅膀；乌龟有坚硬的外壳；尽管人类脸朝着星星直立行走，却没有武器来保护自己。

An African melon has a mouth-watering method of convincing aardvarks to go to the trouble of tunneling deep into the earth to liberate a few tough pits

一种非洲瓜用令人垂涎的姿态让土豚特意挖深隧道形成坚硬的深坑。

Case'.'' of certain organisms such as arthropods and turtles.

某些有机体像节肢动物和海龟的坚硬的外壳。

D. audaxviator can also protect itself from environmental hazards by forming endospores – tough shells that protect its DNA and RNA from drying out, toxic chemicals and from starvation.

它们还具有自我保护能力，通过形成孢子内壁避免受到周围环境的污染，孢子内壁是非常坚硬的外壳，可以保护其DNA和RNA不被干燥、不受有毒化学侵袭和避免死亡。

A hard yellowish to brownish translucent fossil resin; used for jewelry.

一种坚硬的黄色到褐色的半透明化石树脂，用来制造珠宝。

A hard, translucent, yellow, orange, or brownish-yellow fossil resin, used for making jewelry and other ornamental objects.

琥珀一种坚硬的半透明，呈黄色、桔黄色或浅褐色的化石树胶，用来制造珠宝和其它装饰物

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。