柯林斯詞典nacre /?ne?k?/ 1. N →the technical name for mother-of-pearl 返回 nacre劍橋詞典a smooth , hard substance forming a layer inside the shells of some sea creatures . It is white but also seems to shine with different colours , and is used to make buttons and for decoration . 珠母層，珍珠母 同義詞mother-of-pearl 返回 nacre