nutshell

It takes a strong metal tool to crack open the thick nutshell of a macadamia.

(Chinese) 需要坚固的金属工具才能撬开澳洲坚果厚厚的坚果壳。

The empty nutshells were scattered all over the floor after the party ended.

(Chinese) 聚会结束后，空坚果壳撒了一地。