The original LD2 has been replaced and updated (4 revisions to date) and the sound has changed.I did not find my unit tended to be warm.是什麼意思_The original LD2 has been replaced and updated (4 revisions to date) and the sound has changed.I did not find my unit tended to be warm.在線翻譯_英語_讀音_用法_例句