Artificial bone and egg shells make good building materials due to their makeup of proteins and minerals.

人造骨和蛋壳是很好的建筑材料，因为它们由蛋白质和矿物质构成。

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In the researchers' experiment, that was already enough to stunt shellfishes' growth and make their shells thinner.

在这些研究者的试验中，这已经足以阻碍甲壳类生物的生长，让它们的甲壳变薄了。

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For instance, it's still not known why only some chiton species have eyes, or how the creatures are able to use the same material to make both their eyes and their shells.

例如，为什么只有一些特定种类的石鳖才有眼睛，还有它们是如何用同一种物质构建眼睛和甲壳的。

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You know, if I had like shells and peas here I could make some more money. What do I do?

要知道，如果我喜欢贝壳和豌豆的话,那么我可以赚更多的钱？

麻省理工公开课 - 计算机科学及编程导论课程节选

Organisms that make shells or have skeletons that are exposed to seawater, such as clams, snails and sea butterflies, could see their shells dissolve in water that is too acidic.

CNN: Ice shelf collapse: What does it mean?

They were such a hit that Taco Bell postponed a follow-up Cool Ranch flavor to early this year to make sure there was enough capacity to make the shells.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

Taco Bell, an operating company of Tricon Global Restaurants (nyse: YUM - news - people ), does not make these taco shells but licenses the Taco Bell name to Kraft, a unit of Philip Morris (nyse: MO - news - people ), for use on retail products.

FORBES: Kraft Recalls Taco Bell Shells Sold In Grocery Stores