及物动词
名词
1. 宝石
A gem is a jewel or stone that is used in jewellery.
2. 难能可贵的人（或物）；令人非常惬意的人（或事物）；精品
If you describe something or someone as a gem, you mean that they are especially pleasing, good, or helpful.
1. art highly prized for its beauty or perfection
Synonym: treasure
2. a precious or semiprecious stone incorporated into a piece of jewelry
Synonym: jewelprecious stone
3. a sweet quick bread baked in a cup-shaped pan
Synonym: muffin
4. a person who is as brilliant and precious as a piece of jewelry
Synonym: jewel
5. a crystalline rock that can be cut and polished for jewelry
e.g. he had the gem set in a ring for his wife
she had jewels made of all the rarest stones