“硬壳”怎么读？

乌龟背上有硬壳.A tortoise has a shell on his back.他们砸开坚果，剥去硬壳。They cracked the nuts and removed their shells.国务秘书从他的官员的硬壳里伸出了柔软的脑袋.The secretary had put forth his soft head from the official shell....

“硬壳”的英语可以翻译为：[地质] duricrust，[动] shell，crust，incrustation ...