英汉词典

H 基本解释

• n. 英语字母中的第八个字母，小写为h
• symb. 氢（化学元素）

H 英文词源

H

eighth letter of the alphabet; it comes from Phoenician, via Greek and Latin. In Phoenician it originally had a rough guttural sound like German Reich or Scottish loch. In Greek at first it had the value of Modern English -h-, and with this value it passed into the Latin alphabet via Greek colonies in Italy. Subsequently in Greek it came to be used for a long "e" sound; the "h" sound being indicated by a fragment of the letter, which later was reduced to the aspiration mark. In Germanic it was used for the voiceless breath sound when at the beginning of words, and in the middle or at the end of words for the rough guttural sound, which later came to be written -gh.

The sound became totally silent in Vulgar Latin and in the languages that emerged from it; thus the letter was omitted in Old French and Italian, but it was restored pedantically in French and Middle English spelling, and often later in English pronunciation. Thus Modern English has words ultimately from Latin with missing -h- (able, from Latin habile); with a silent -h- (heir, hour); with a formerly silent -h- now often vocalized (humble, humor, herb); and even a few with an excrescent -h- fitted in confusion to words that never had one (hostage, hermit). Relics of the formerly unvoiced -h- persist in pedantic insistence on an historical (object) and in obsolete mine host.

The pronunciation "aitch" was in Old French (ache "name of the letter H"), and is from a presumed Late Latin *accha (compare Italian effe, elle, emme), with the central sound approximating the rough, guttural value of the letter in Germanic. In earlier Latin the letter was called ha. The use in digraphs (as in -sh-, -th-) goes back to the ancient Greek alphabet, which used it in -ph-, -th-, -kh- until -H- took on the value of a long "e" and the digraphs acquired their own characters. The letter passed into Roman use before this evolution, and thus retained there more of its original Semitic value.

H 英文释义

1. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10\-34 joule-second

H 双语例句

1. Edwin H. Conger was envoy extraordinary and Minister Plenipotentiary.

埃德温·H.康格是特命全权公使。

来自柯林斯例句

2. The chemical formula for water is H 2 O.

水的化学分子式是H2O.

来自《简明英汉词典》

3. The second quotation is from an essay that D H Lawrence wrote in the nineteen-twenties.

第二段引文出自D.H.劳伦斯20世纪20年代写的一篇文章。

来自柯林斯例句

4. D H Lawrence immortalised her in his novel "Women in Love". D.H.

劳伦斯在小说《恋爱中的女人》中把她塑造成了一个不朽的角色。

来自柯林斯例句

5. By the third lap Kinkead had touched 289 m.p.h.

到第三圈时，金基德的车速达到了每小时289英里。

来自柯林斯例句

H 实用场景例句

Edwin H. Conger was envoy extraordinary and Minister Plenipotentiary.

埃德温·H.康格是特命全权公使。

柯林斯例句

By the third lap Kinkead had touched 289 m.p.h.

到第三圈时，金基德的车速达到了每小时289英里。

柯林斯例句

The W.H.O. safety standard for ozone levels is somewhere about a hundred.

世界卫生组织关于臭氧层的安全标准约为100。

柯林斯例句

Police pulled him over doing 120km/h, making rapid changes and tailgating.

警察令他把车靠边停下，因为他的时速高达120公里还一直快速变道、紧贴行驶。

柯林斯例句

He was delighted to coax the monoplane to 330 m.p.h.

这架单翼飞机在他的摆弄下时速达到了每小时330英里，他感到很高兴。

柯林斯例句

Why don't you ask Roy? H e's well up in Chinese art.

你为什么不请教罗伊 呢 ?他对中国的艺术很精通.

《简明英汉词典》

The chemical formula for water is H 2 O.

水的化学分子式是H2O.

《简明英汉词典》

He merely said, " H'm " , and went away.

他 嗯 了一声, 就走了.

《现代汉英综合大词典》

Why did you walk away from me like that? H ave I said words to offend you?

你为什么要那样离开我 呢 ?我说的话惹你生气了 吗 ?

《简明英汉词典》

To clarify some grammatical doubts, the young wrote to H. Fowler, the lexicographer who produced the "Concise English Dictionary".

为了探索英语，那年轻人给《简明英语词典》的主编H-Fowler写了封信。

辞典例句

" Where is H . R . Jacob's? "

“ 约各戏院在哪里?

英汉文学 - 嘉莉妹妹

" H . R . Jacob's,'said Minnie.

“ 约各剧院的戏, "敏妮说.

英汉文学 - 嘉莉妹妹

The English naturalist W. H. Hudson was born in Argentina.

英国博物学家W. H. 哈得逊出生在阿根廷.

辞典例句

The H conversion code provides a facility for printing out characters.

H换算码为打印出字符提供方便.

辞典例句

In mice the H - 2 isoantigens are the strongest histocompatibility antigens.

小鼠中的H -2 同种抗原是最强的组织相容性抗原.

辞典例句