They averaged $2.30 per pound last year for nuts in the shell.
带壳的山核桃，他们以前平均每磅只拿到2.30美元。
Store nuts in the shell until you are ready to use them. Refrigerate or freeze any that you plan to keep for more than three months.
除非食用，坚果不要预先去壳。冷冻、冷藏起来可以保存三个月以上。
Some chimpanzees, for example, are known to bang nuts on stones, in order to break the shell and get at the edible kernel inside.
例如，人们知道有些黑猩猩会把坚果砸到石头上，以便敲开坚果壳，吃到里面的的果仁。
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