小宝贝真紧校园强h_二区免费视频_91免费视_九一精品一区_69热国产视频_在线免费看毛片

单词
carat
英 ['k?r?t] 美['k?r?t]
基本信息
  • n. 克拉(等于karat)
  • n. (Carat)人名;(法)卡拉
TEM8GRETOEFL低频词扩展词汇

词态变化

复数:?carats;

助记提示

1. 音译“克拉”。

中文词源

carat 克拉,开

来自PIE*ker, 角,词源同horn,carob。源自历史上用角豆树(carob)种子测量黄金或宝石含量,后用作黄金纯度单位。

英文词源

carat
carat: [16] The carat gets its name from the use of carob beans as standard weights for measuring the heaviness of small quantities. The Greek name for the elongated seed pod of the carob tree was kerátion, a derivative of kéras ‘horn’ (related to English horn). This passed into Arabic as qīrāt, where it became formalized in a system of weights and measures as ‘four grains’. It passed into English via Italian carato and French carat.
=> horn
carat (n.)
also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree," also "weight of 4 grains," from Greek keration "carob seed," also the name of a small weight of measure (one-third obol), literally "little horn" diminutive of keras "horn" (see kerato-).

Carob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1570s in English. The Greek measure was the equivalent of the Roman siliqua, which was one-twentyfourth of a golden solidus of Constantine; hence karat took on a sense of "a proportion of one twentyfourth" and became a measure of gold purity (1550s). Eighteen carat gold is eighteen parts gold, six parts alloy. It is unlikely that the classical carat ever was a measure of weight for gold.

双语例句

1. an 18-carat gold ring
18开的金戒指

来自《权威词典》

2. She has a four - carat stone in her ring.
她的戒指镶有一颗四克拉的宝石.

来自《简明英汉词典》

3. Can you believe that he bought her a 5.3 - carat diamond ring?
你知道吗,他买了一颗5.3克拉的钻石戒指给她?

来自互联网

4. One sign of Mastitis mastitis is carat cracked skin on the tisteats.
乳腺癌的一个现象是乳头皮肤裂开,同时乳腺发热,疼痛变大.

来自互联网

5. This diamond, may process is 150 carat fine diamonds.
这颗钻石, 可以被加工成一颗重达150克拉的精美钻石.

来自互联网

carat相关单词
主站蜘蛛池模板: 日本一级在线播放线观看视频 | 青青草综合网 | 亚洲日韩欧美一区二区三区 | 午夜影院欧美 | 成年人在线观看视频免费 | 99国产高清久久久久久网站 | 成年网站在线观看视频 | 国产精品久久久久久吹潮 | 欧美色图网站 | 偷拍自拍成人 | 男人的天堂精品国产一区 | 一本无码人妻在中文字幕免费 | 国产丰满乱子伦无码专 | 无码人妻一区二区三区精品视频 | 亚洲精品无码久久久久秋霞 | 亚洲白浆 | 看免费一级毛片 | 久久久久久夜精品精品免费啦 | 毛片免费视频 | 三上悠亚在线精品二区 | 九九九国产 | 99热精品69堂国产 | 一区二区三区精品视频免费播放 | 夜爽8888视频在线观看 | 亚洲人成亚洲精品 | 女人与公拘交酡全过程 | 欧美一级视频免费看 | 亚洲免费视频观看 | 国自产拍偷拍精品啪啪模特 | 久久久久综合网久久 | 日本一级特黄视频 | 好爽...又高潮了毛片 | 久久亚洲一区二区三区四区五区 | 久久久久久久国产高清 | 日韩资源站 | 国产午夜亚洲精品不卡下载 | 欧美天天性影院 | 久久99久久99精品免观看麻豆 | 一区二区传媒有限公司 | 色拍自拍亚洲综合图区 | 亚洲无av码一区二区三区 |