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“發(fā)顫音”的英語可以翻譯為：quaver ...

這是個發(fā)顫音的字母.This is a letter with a trill.在聲音上它們基本算得上安靜, 然而高興時它們會發(fā)顫音 、 唧唧聲和短而輕的聲音.They are basically quiet cats in voice, however they do trill, chirp and click when delighted....