R 英音: [ɑː] 美音: [ɑːr]

单词详解

  n.

A. 英语字母的第十八个字母,小写为r (the 18th letter of the Roman alphabet)

The trilled “r” is produced by vibrating the tongue against the upper teeth.

发带颤音的r,舌抬向上齿颤动而成。

B.  abbr.

电阻(resistance);比率(ratio);医生处方(recipe

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