Old World climbing plant with hard-shelled bottle-shaped gourds as fruits.

旧大陆攀援植物，有硬壳的瓶状果实。

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Small hard-shelled nut of north american hickory trees especially the shagbark hickories.

北美胡桃树尤其是山胡桃树的小的坚壳的果子。

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Sometimes the tortilla is Fried to make a hard-shelled taco, or just heated up to keep it soft.

有时，玉米圆饼会被油炸成硬壳，抑或只是加热以保持其松软。

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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