国产一二三四五路线-国产一级高清-国产一级毛片卡-国产一级毛片一区二区三区-中文字幕在线视频播放-中文字幕在线高清

您好!歡迎訪問忙推網! 字典 詞典 詩詞

X

英 [eks] 美
  • n. Xs或X's;X級電影,成人電影(十八歲以下兒童不得觀看);未知數;英語字母中的第二十四個字母

基本詞匯

英文詞源


X
The entire entry for X in Johnson's dictionary (1756) is: "X is a letter, which, though found in Saxon words, begins no word in the English language." Most English words beginning in -x- are of Greek origin or modern commercial coinages. East Anglian in 14c. showed a tendency to use -x- for initial sh-, sch- (such as xal for shall), which didn't catch on but seems an improvement over the current system. As a symbol of a kiss on a letter, etc., it is recorded from 1765. In malt liquor, XX denoted "double quality" and XXX "strongest quality" (1827).

Algebraic meaning "unknown quantity" (1660 in English, from French), sometimes is said to be from medieval use, originally a crossed -r-, in that case probably from Latin radix (see root (n.)). Other theories trace it to Arabic (Klein), but a more prosaic explanation says Descartes (1637) took x, y, z, the last three letters of the alphabet, for unknowns to correspond to a, b, c, used for known quantities.

Used allusively for "unknown person" from 1797, "something unknown" since 1859. As a type of chromosome, attested from 1902 (first so called in German; Henking, 1891). To designate "films deemed suitable for adults only," first used 1950 in Britain; adopted in U.S. Nov. 1, 1968. The XYZ Affair in American history (1797) involved French agents designated by those letters.
x (v.)
"cross out with an 'X'," 1942, from X.

雙語例句


1. I had to go back for my checkup; they'd lost my X-rays.
我得回去再做一次體檢。他們把我的X光片弄丟了。

來自柯林斯例句

2. A stupid medical clerk had slipped the wrong tab on his X-ray.
一個蠢笨的醫護人員一不留神在他的X光片上貼錯了標簽。

來自柯林斯例句

3. X-rays have confirmed that he has not broken any bones.
X光片證實他沒有骨折。

來自柯林斯例句

4. The airline had been screening baggage on X-ray machines.
該航空公司已采用X光機對行李進行安全檢查。

來自柯林斯例句

5. They took my pulse, took my blood pressure, and X-rayed my jaw.
他們給我量了脈搏、血壓,還給我的下頜拍了X光片。

來自柯林斯例句

字典 詞典 成語 古詩 造句 英語
主站蜘蛛池模板: 中国美女黄色一级片 | 久久精品国产精品青草 | 久久久久久亚洲精品影院 | 色悠久| 国产女主播在线 | 国产亚洲小视频 | 91精品国产爱久久久久 | 岛国在线永久免费视频 | 91情侣在线偷精品国产 | 中文字幕日韩一区二区不卡 | 特级深夜a级毛片免费观看 特级生活片 | 亚洲国产成人在线观看 | 在线免费成人网 | 亚洲资源在线 | 免费观看视频成人国产 | 日本免费一级 | 亚洲黄网址 | 国产成人国产在线观看入口 | 日韩一级不卡 | 国内精品久久久久影院亚洲 | 中国女警察一级毛片视频 | 欧美另类视频videosbest18 | 欧美成人精品高清在线播放 | 欧美三级欧美一级 | 亚洲一区不卡 | 国产精品久久免费观看 | 久久成人精品免费播放 | youjizz日韩 | 韩国福利影视一区二区三区 | 久久99精品久久久久久综合 | 日韩特级毛片 | 欧美一级在线看 | 国产高清在线精品二区一 | 手机在线看片国产日韩生活片 | 国产一起色一起爱 | 欧美日韩一级二级三级 | 日本乱人伦在线观看免费 | 美女扒开腿让男人桶 | 在线日韩欧美一区二区三区 | www.久草视频| 亚洲精品无码专区在线播放 |