In most human languages, the most frequently used words are short. Think "the," and, "of " and "a."
원문출처 : https://www.cnn.com/2020/02/05/world/penguins-voice-patterns-scn/index.html
원문출처 : https://www.cnn.com/2020/02/05/world/penguins-voice-patterns-scn/index.html