Hard shelled nut of North American hickory trees especially the shagbark hickories.

北美胡桃尤其是山胡桃的的坚壳的果子。

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Their powerful jaws can break nuts that they find such as coconuts and other hard shelled nuts.

牠们强有力的下颚能够咬破牠们所找到的坚果，例如椰子和其它的硬壳坚果。

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Reaching 5 feet (1.5 meters) long, wolffish have conspicuous dentition suited to a diet of hard-shelled mollusks, crabs, and sea urchins.

体长最多可达5英尺(1.5米)的狼鱼有着明显的齿系以适应由裹着硬壳的软体动物，蟹类以及海胆组成的食谱。

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The hard-shelled fruit is an intrinsic part of Sri Lankan culture and cuisine.

BBC: Sri Lanka takes on nationwide coconut crisis

Have you ever been playing around with molten metal salt, when you accidentally created hollow, soft-shelled particles that could one day increase hard disk storage or power future QLED displays?

ENGADGET: Researchers stumble onto 'lava' generated quantum dots, could power future peripherals