precious

valuable, precious

形容词 precious:

1. characterized by feeling or showing fond affection for
   同义词：cherished, treasured, wanted
2. of high worth or cost
3. obviously contrived to charm
   同义词：cute

副词 precious:

1. extremely
   同义词：preciously

1. Pandas are precious creatures.
   熊猫是珍贵的动物。
2. You should make good use of every precious minute to study.
   你应很好利用宝贵的每一分钟去学习。
3. That old book is my most precious possession.
   那本旧书是我最珍贵的财产。
4. My time is precious; I can only give you a few minutes.
   我的时间很宝贵，我只能见你几分钟。

pre.cious

adj.（形容词）
Of high cost or worth; valuable.
昂贵的：价钱或价值很高的；值钱的
Highly esteemed; cherished.See Synonyms at costly
珍贵的：受到高度评价的；珍藏的参见 costly
Dear; beloved.
亲爱的；被热爱的
Affectedly dainty or overrefined:
矫揉造作的：矫饰地优美或过分文雅的：
例句：
precious mannerisms.
矫揉造作的习气

Informal Thoroughgoing; unmitigated:
【非正式用语】 十足的；纯粹的：
例句：
a precious mess.
一团糟

n.（名词）
One who is dear or beloved; a darling.
珍爱的人，宝贝：被深爱或挚爱的人；爱人
adv.（副词）
Used as an intensive:
用作强义词：
例句：
.He had precious little right to complain.(James Agee)
.他根本没有权利抱怨.(詹姆斯·艾吉)

来源：
Middle English
中古英语
from Old French precios
源自 古法语 precios
from Latin pretiôsus
源自 拉丁语 pretiôsus
from pretium [price] * see per- 5
源自 pretium [价值] *参见 per- 5

【引伸】
pre.ciously
adv.（副词）
pre.ciousness
n.（名词）