gem汉语翻译：
n. 珠宝, 宝石, 珍贵之物
vt. 饰以宝石词型变化：
动词过去式:gemmed过去分词:gemmed现在分词:gemming第三人称单数:gems词意辨析：
jewel, jewellery, stone, gem这些名词均有“宝石”之意。
jewel: 多指贵重的宝石，是经过切削打磨，通常镶嵌在胸针、项链或其它装饰物上的玉。
jewellery: 是珠宝的总称，泛指各类珠宝，既指佩带的或衣服上的珠宝饰物，又指用普通金属、塑料或假宝石制作的装饰物。
stone: 特别强调稀少罕见或值钱的矿物。
gem: 指经切割、磨光的宝石，引申指珍品、佳作。英语解释：
名词 gem:

a crystalline rock that can be cut and polished for jewelry同义词：gemstone, stone

art highly prized for its beauty or perfection同义词：treasure

a person who is a brilliant and precious as a piece of jewelry同义词：jewel

a sweet quick bread baked in a cup-shaped pan同义词：muffin

a precious or semiprecious stone incorporated into a piece of jewelry同义词：jewel, precious stone

例句：

A smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem.珍珠在几种软体动物的贝壳中，围绕着一粒沙子或其他外来物质形成的一种光滑、有色泽、具有不同颜色且主要是碳酸钙的沉积物，被珍视为宝石

The price of this gem is expensive -- as much so as astronomical figures.这个宝石的价格十分昂贵－－简直是个天文数字。

My secretary is an absolute gem.我的秘书真是个难能可贵的人。

详细解释：
gem
n.（名词）
A pearl or mineral that has been cut and polished for use as an ornament.
宝石，珍珠：珍珠或矿石，已被切割或抛光而作为装饰品
Something that is valued for its beauty or perfection:
珍品：由于其美丽或完美而被珍藏的东西：
例句：
a little gem of a book.
一本宝书
A beloved or highly prized person.
受到宠爱或评价很高的人
A type of muffin.
一种小松糕
v.tr.（及物动词）
gemmed,gem.ming,gems
To adorn with or as if with precious or semiprecious stones.
装饰：用宝石修饰，或用看起来是宝石或半宝石的东西装饰
来源：
Middle English gemme
中古英语 gemme
from Old French
源自 古法语
from Latin gemma * see gembh-
源自 拉丁语 gemma *参见 gembh-

gem