A SIMPLE KEY FOR HEAT INSULATOR UNVEILED

—utilized as a functionality phrase just before a proper noun to distinguish the issue with the referent from a usual, former, or hypothetical situationDuring the Intercontinental Phonetic Alphabet, ⟨a⟩ is employed for the open up front unrounded vowel, ⟨ä⟩ is employed for the open central unrounded vowel, and ⟨ɑ⟩ is useful for the