cuttle bone
柯林斯词典
1. N the internal calcareous shell of the cuttlefish, used as a mineral supplement to the diet of cage-birds and as a polishing agent 墨魚骨; 用作給籠中鳥進食的鑛物飼料及打磨作用劑
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1. N the internal calcareous shell of the cuttlefish, used as a mineral supplement to the diet of cage-birds and as a polishing agent 墨魚骨; 用作給籠中鳥進食的鑛物飼料及打磨作用劑