• n. 英语字母中的第十八个字母
• abbr. 电阻（resistance）；比率（ratio）；医生处方（recipe）

来自希腊字母 rho,来自希伯来字母 resh,头。

R

In a circle, meaning "registered (trademark)," first incorporated in U.S. statues 1946. R&R "rest and relaxation," first recorded 1953, American English; R&B "rhythm and blues" (type of popular music) first attested 1949, American English.

If all our r's that are written are pronounced, the sound is more common than any other in English utterance (over seven per cent.); the instances of occurrence before a vowel, and so of universal pronunciation, are only half as frequent. There are localities where the normal vibration of the tip of the tongue is replaced by one of the uvula, making a guttural trill, which is still more entitled to the name of "dog's letter" than is the ordinary r; such are considerable parts of France and Germany; the sound appears to occur only sporadically in English pronunciation. [Century Dictionary]

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The moment we encounter the added r's of purp or dorg in our reading we know that we have to do with humor, and so with school-marm. The added consonants are supposed to be spoken, if the words are uttered, but, as a matter of fact, they are less often uttered than seen. The words are, indeed, largely visual forms; the humor is chiefly for the eye. [Louise Pound, "The Humorous 'R,'" "American Mercury," October 1924]

She goes on to note that in British humorous writing, -ar "popularly indicates the sound of the vowel in father" and formations like larf (for laugh) "are to be read with the broad vowel but no uttered r." She also quotes Henry James on the characteristic prominence of the medial -r- sound (which tends to be dropped in England and New England) in the speech of the U.S. Midwest, "under some strange impulse received toward consonantal recovery of balance, making it present even in words from which it is absent, bringing it in everywhere as with the small vulgar effect of a sort of morose grinding of the back teeth."

1. Details are available from the Hon. Sec. A.R. Bushby.

详情可咨询名誉秘书A.R.布什比。

来自柯林斯例句

2. Politicians began to use the dreaded R-word: recession.

政客们开始使用令人恐惧的R字头词：recession（经济衰退）。

来自柯林斯例句

3. Q comes between P and R in the English alphabet.

英语字母表中，Q在P和R之间。

来自《权威词典》

4. The final letter is very vague; possibly an R or a K.

最后一个字母很不清楚, 可能是R,也可能是K.

来自《简明英汉词典》

5. The winners are as follows: E. Walker; R. Foster; R. Gates; A. Mackintosh.

优胜者分别是：E.沃克、R.福斯特、R.盖茨和A.麦金托什。

来自柯林斯例句