1·How is a cultured pearl produced?
珍珠是怎样养殖的？
2·Pearl rings, especially cultured pearl rings, are beautiful gifts that can be cherished for generations.
珍珠戒指，特别是养殖珍珠戒指，是美丽的礼物，可以珍惜几代人。
3·Pearl categories: natural pearls, cultured pearls, natural sea beads, sea pearls, freshwater pearls, South Sea pearls, black pearls;
珍珠类：天然珍珠、养殖珍珠、天然海珠、海水珍珠、淡水珍珠、南洋珍珠、黑珍珠；
4·The characteristics of the new shapes of pearl are systematically summarized. Nucleated cultured pearls are more suitable to be produced for varied shaped pearls.
系统地总结了目前中国珍珠市场上新造型的珍珠的特征，其中有核珍珠更适合于加工成各式各样的异形珠。
5·Cultured pearls don’t have at their core a grain of sand, but instead arelittle plastic or glass beads or something that pearl farmers stick into theoyster for a year or so.
对于人工养殖的珍珠而言，它们的核心并不是沙粒，而是像小塑料珠或小玻璃珠之类的物体。 珍珠养殖者把这些小东西塞到牡蛎中，然后等上一年左右的时间。
6·The natural pearl is much more expensive than a cultured one.
天然珍珠比养殖的要昂贵得多。
7·The pearl sacs were also cultured in another way of emigrating the pieces of mantle tissue to a nuclear.
二直接用外套膜组织块在珠核上形成珍珠囊。方法一所产生的珍珠囊未培育出珍珠 ；