[Machine Translation] In this haiku by Basho, "Frog" should be translated as either a frog or frogs. In English, it is not allowed to translate without deciding whether it is singular or plural. The book also introduces other Japanese expressions that are difficult to translate, such as onomatopoeic and mimetic words like "flicker" and "dong dong"; "rain ni mo yakezu" written in a mixture of kanji and katakana; and metaphors such as "his face looks like a Noh mask. Japanese expressions that are difficult to translate are introduced.