坚硬的外壳

If you want to shell a walnut, it helps to have a nutcracker.

如果你想吃核桃，钳子会帮助你打开它坚硬的外壳。

How can people get out of this shelled world?

当然不是。如何走出这坚硬的外壳？

Despite their hard shells, both are on the menu for the bay's top predator, the tiger shark.

尽管具有坚硬的外壳，它们却都是海湾中头号肉食者的囊中之物。

This robot called the "Trilobite Tank" was modeled to resemble the Trilobite--an aquatic creature with a hard shell that flourished for millions of years in many forms before becoming extinct.

这个机器人被称为"三叶虫智囊团"为蓝本，以类似于三叶虫-一水产动物具有坚硬的外壳蓬勃发展为以百万计的年，在许多形式之前，成为灭绝。

The turtle has a very hard shell.

乌龟有很坚硬的外壳。

This kind of beetles have hard shell.

这类甲虫有坚硬的外壳。

Just cut off the crusts first to minimize the chance of scratching the paper.

只需将坚硬的外壳切除就可以最小化刮破墙纸的风险。

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。

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。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。