n. 名詞 1. 珠母貝,珍珠母。
2. 真珠層;真珠質。


    1. When the pearls are later harvested, the oyster has covered the bead with layers of nacre

    2. Fine pearls do not have any flaws or spots in the nacre : it has an even, smooth texture

    3. Not only then are the smaller, less robust creatures but the pollution in the water changes the color of the nacre and changes the color of the pearl

    4. To avoid the effects of cosmetics and perfume, pearls should be the last thing a woman puts on before going out and the first thing she takes off after returning home. also, pearls are quite soft, so for the longest - lasting pearls choose those with thick nacre that can help them withstand wear over time. the best way to care for pearls is to wear them often because the body s natural oils keep them lustrous

    5. The pearl begins when the mollusk secretes a lustrous substance, called nacre, that coats the irritant and protects the soft internal surface of the mollusk