Question

aitch

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aitch / etʃ ; eɪtʃ /
◙noun (plural aitches) [C,U]
1. the letter H when written as a word not a letter
• 字母 H:
 »drop your aitches ( = not pronounce the letter H at the beginning of words )
  不发词首的 H 音
 »People with Cockney accents tend to drop their aitches.
  带伦敦东区口音的人往往不发词首的 H 音。